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{"id":1787816017983,"title":"Aclam Dr. Robert Pedal - Vox UL730 Beatles Sound Re-Created","handle":"aclam-dr-robert-pedal","description":"\u003cp\u003e\u003cstrong\u003eFast Free Shipping - No Taxes - Free Returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eThe new Aclam Dr. Robert Pedal nails the tone of the Vox UL730\u003c\/strong\u003e, one of the rarest amps of all time, used by the Beatles on their iconic \u003cstrong\u003eRevolver and Sgt. Pepper's\u003c\/strong\u003e records. The Revolver-esque artwork displayed on this pedal is created by none other than \u003cstrong\u003eKlaus Voormann\u003c\/strong\u003e, the designer of the famous 1966 Beatles Revolver album!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cmeta name=\"copied-from\" content=\"wysihtml5\"\u003e\n\u003cblockquote\u003e\n\u003ch3\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003ci\u003e\"There are sounds (on Revolver) that nobody else has done yet. I mean nobody... ever.\"\u003cbr\u003e\u003c\/i\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003ci\u003e- Paul McCartney\u003c\/i\u003e\n\u003c\/h3\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eDr. Robert... what is it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDr. Robert is \u003cstrong\u003eAclam’s newest guitar pedal\u003c\/strong\u003e, that gives you a \u003cstrong\u003eperfect replica of the legendary Vox UL730 amp sounds\u003c\/strong\u003e, famously used by The Beatles, Stones, and Zeppelin!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQUICK FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMach Schau!\u003c\/strong\u003e - Extra saturation function (\u003cstrong\u003eclick both footswitches on\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003eSmart Track Fastening System\u2028\u003c\/li\u003e\n\u003cli\u003eHigh-end components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Bypass\u003c\/strong\u003e switching\u2028\u003c\/li\u003e\n\u003cli\u003eThe closest you can get to the rarest Vox amp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOVERVIEW:\u003cbr\u003e\u003c\/strong\u003eThe Vox UL700 amp series were the secret weapon used by The Beatles to achieve the unique guitar tone on Revolver and part of Sgt. Peppers. \u003cstrong\u003eThey were also used by The Rolling Stones and Jimmy Page of Led Zeppelin.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003eIntroduced in 1966, \u003cstrong\u003ethese state-of-the-art guitar amps mixed a solid-state preamp with a tube power amp section\u003c\/strong\u003e. \u003cstrong\u003e\u003c\/strong\u003eTubes were standard at that time but had the inconvenience of being voluminous and prone to fail, plus they needed bigger transformers due to impedance matching and power requirements. Transistors were the solution as they were way smaller, reliable and took much less energy to operate. So, \u003cstrong\u003ein 1965, Vox engineer Dick Denney decided to develop a hybrid amp with a solid-state preamp and tube powered amp section.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003eThanks to the relatively new transistor technology, lots of features could be added. Top-of-the-line models included two channels with 3 band eq each, distortion, tremolo and reverb. \u003cstrong\u003e\u003c\/strong\u003eThere were many variants with different power ratings, but \u003cstrong\u003ethe ones used by The Beatles were the UL730 (30w) and UL7120 (120w). \u003c\/strong\u003eUnfortunately, aside from The Beatles, those amps weren't popularly used at the time and most of them ended being returned to Vox for their disposal.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eOnly a small number of UL730 units survived\u003c\/strong\u003e (around 20\/30 units as some renown Vox connoisseurs state), attaining the title of being the most collectable Vox amps, with prohibitively collector pricing. \u003cstrong\u003eNow they are the missing link between tube and solid-state amps.\u003cbr\u003e\u003cbr\u003eThe Dr. Robert is based on the Normal channel of our Vox UL730, serial number 3042.\u003c\/strong\u003e We traced the original tag board circuits and measured each component’s value to make the closest replica of the amp’s soul and character.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eOne of the keys of its tone is the “Middle” control\u003c\/strong\u003e, which is one of the most interesting mid-range eq ever found on an amp. By turning it counterclockwise, a great amount of mid-frequencies will be subtracted, creating a scooped sound. On the other hand, when it's turned clockwise it will bring out all the mids, and the signal will build up in gain. \u003cstrong\u003eBy tailoring the “Middle” knob you can control both midrange and saturation.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003eAs the solid-state preamp of the UL730 doesn’t create much distortion by itself, \u003cstrong\u003eAclam has coupled it with a custom FET saturation engine\u003c\/strong\u003e to mimic the attributes of the tube power amp section. Not happy enough with that? We’ve gone even further, creating the \u003cstrong\u003e“Mach Schau!” section\u003c\/strong\u003e, which adds saturation to your main sound and includes an independent volume control to allow you to have both a rhythmic and a solo tone (\u003cstrong\u003ejust click on both footswitches\u003c\/strong\u003e).\u003c\/p\u003e\n\u003cp\u003e \u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/review-aclam-dr-robert-pedal_80aabc6f-ac53-4085-9a46-0560cdadf5d0.png?v=1562094509\" alt=\"Review of Aclam Dr Robert Pedal by Guitar Player\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSometimes you can’t trust the internet or an old schematic. We’ve found major discrepancies between the published schematic and the real thing, such as component types and values, so we can assure you that this is the closest you can get to the rarest Vox amp.\u003cstrong\u003e Following the preamp there’s a custom FET based circuit emulating the saturation produced by the UL730 EL84’s tube power amp section.\u003c\/strong\u003e \u003cstrong\u003e\u003c\/strong\u003eAdditionally, the circuit works with the same voltages found on the original amp, thanks to a charge pump circuit which \u003cstrong\u003etakes the 9VDC from the battery or DC plug and converts it to 18VDC.\u003cbr\u003e\u003cbr\u003eSmart Track Fastening System:\u003cbr\u003e\u003c\/strong\u003eAll Aclam pedals use a custom enclosure designed to \u003cstrong\u003ematch perfectly with our Smart Track pedalboards\u003c\/strong\u003e. Using the side thumb screws, you’ll be able to safely lock the stompbox into one of our pedalboards. It was also designed with other pedalboard options in mind.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eMach Schau! Function:\u003cbr\u003e\u003cspan style=\"color: #000000; font-family: 'Franklin Gothic Book', sans-serif; font-size: 14.666666984558105px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; display: inline !important; float: none;\"\u003eThe Mach Schau! is a function that you can \u003cstrong\u003eactivate by clicking both footswitches on\u003c\/strong\u003e. It provides \u003cstrong\u003eextra saturation with an independent volume control (MS Vol)\u003c\/strong\u003e. The Mach Schau! is like a distortion pre-set. You will have the base sound with more or less saturation, and from that sound, when you activate the Mach Schau!, you will get even more saturation. With the independent volume control, it allows you to have more distortion at the same volume, or the same distortion raising the volume.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eCustom graphics by Revolver's cover artist, Klaus Voorman:\u003cbr\u003e\u003c\/strong\u003eWe’re so honored to have \u003cstrong\u003eKlaus Voormann, designer of The Beatle’s Revolver album cover\u003c\/strong\u003e, create the artwork for the Dr. Robert pedal!\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eHigh end components and true bypass switching:\u003cbr\u003e\u003c\/strong\u003eWe made an extra effort to put \u003cstrong\u003ethe finest and closest components to the original amp in the Dr. Robert pedal.\u003c\/strong\u003e Carbon comp resistors, Nichicon Fine Gold and Wima caps, Alpha pots and switches, these make the Aclam Dr. Robert pedal reliable, with authentic tone.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eCircuit tailored for both guitar and bass instruments:\u003cbr\u003e\u003c\/strong\u003eAlthough based on the UL730 preamp, \u003cstrong\u003ethe UL400 series (designed for bass) shared almost the same circuitry.\u003c\/strong\u003e When doing tests using different instruments and amps, we noticed that \u003cstrong\u003eDr. Robert sounds flawless with bass too!\u003c\/strong\u003e By tuning the FET circuit a bit, we managed to make the Dr. Robert suitable for both guitar and bass. There are no low-end drops, resulting in a prefect preamp and distortion tool to plug direct or into an amp.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCONTROLS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBYPASS SWITCH:\u003c\/strong\u003e Engages the unit allowing the signal to flow through the Dr. Robert circuit. It also lights up the LED above it.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVOL:\u003c\/strong\u003e Controls the overall volume of the Dr. Robert when you’re not using the Mach Schau! section.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eGAIN:\u003c\/strong\u003e This control is placed in the same position of the circuit as the original UL730’s volume control. Since none of the Vox UL series had a master volume control the user had to turn it all the way up to bring the amp into saturation, and believe us, this thing is loud. To solve that, we put the Vol control at the end of the FET section, so now the volume control on the original amp turns into a gain knob on the Dr. Robert. At lower settings, the Gain knob will produce a clean tone, but as you approach the 12’o-clock mark, the FET section will start entering the saturation region. \u003cstrong\u003eHave in mind that due to Dr. Robert’s great dynamics, different types of guitars and pickups will affect the clean range of the Gain knob.\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMIDS:\u003c\/strong\u003e \u003cstrong\u003eThis is the most critical knob to tailor your sound.\u003c\/strong\u003e Unlike most equalizer circuits (which get placed after or before the volume control) Vox separated the mids control from the rest of the tone stack in the UL730. In this preamp, the signal gets amplified first, followed by the Middle control before the volume pot. After this, Vox placed a special gain stage, coupled with the Bass and Treble controls. Thus, \u003cstrong\u003eyou can control the midrange without interacting with the rest of the eq, as traditional tone stacks do.\u003c\/strong\u003e By turning it counterclockwise, it will subtract a great amount of mid-range, creating a really interesting scooped sound. Turning it clockwise will bring mid frequencies and the overall gain builds up hitting harder the EL84 tubes, creating saturation. \u003cstrong\u003eJust like the real amp does,\u003c\/strong\u003e Dr. Robert’s “Middle” control has the same behavior, thanks to the FET section specially tuned to mimic the power amp saturation on the UL730. So, keep in mind, the “Middle” knob will have a great effect on the overall saturation of the unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMS VOL:\u003c\/strong\u003e Independent volume control for the Mach Schau! section.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMACH SCHAU! Switch:\u003c\/strong\u003e Activates the Mach Schau! Section. It also lights up the LED above it. \u003cem\u003e\u003cstrong\u003e(Note that the Mach Schau! function works only when both footswitches are activated)\u003c\/strong\u003e. This function is not an independent overdrive, but an extra tone of Dr. Robert’s main circuit).\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eINTERNAL CONTROLS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTREBLE Trimpot:\u003c\/strong\u003e Controls the amount of high frequency content of the signal before reaching the FET section. Setting this knob will have an effect over the overall gain.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBASS Trimpot:\u003c\/strong\u003e Sets the amount of low frequency content reaching the FET section. \u003cstrong\u003eThe treble and bass controls work together in a tone-stacked manner, so they are a bit interactive.\u003c\/strong\u003e Both controls are factory set at 12 o'clock.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTRM3 \u0026amp; TRM4 Trimpots:\u003c\/strong\u003e \u003cstrong\u003ePlease don't attempt to adjust these, since they are factory calibrated by Aclam and can void the warranty.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMORE INFO:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003ePower Sources (sold separately):\u003cbr\u003e\u003c\/strong\u003eUses a standard 9 volt battery, or a 9V DC Center-Negative 100mA minimum power supply \u003cstrong\u003e(like Boss and most all other guitar pedals use)\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong style=\"box-sizing: border-box; margin: 0px; padding: 0px; font-weight: bold; caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;\"\u003eWarranty:\u003c\/strong\u003e\u003cbr style=\"box-sizing: border-box; margin: 0px; padding: 0px; caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;\"\u003e\u003cspan style=\"caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;\"\u003eThis product comes with Aclam's \u003c\/span\u003e\u003cstrong style=\"box-sizing: border-box; margin: 0px; padding: 0px; font-weight: bold; caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;\"\u003e2-year warranty\u003c\/strong\u003e\u003cspan style=\"caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;\"\u003e (see page 27 of the product manual below for details).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5 3\/8\" x 3 1\/2\" x 2 1\/4\" (including knobs)\u003cbr\u003e\u003cstrong\u003eBypass:\u003c\/strong\u003e True bypass\u003cbr\u003e\u003cstrong\u003eCurrent Draw:\u003c\/strong\u003e minimum 40mA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded in Box:\u003c\/strong\u003e\u003cbr\u003e1 Anti-sliding rubber pad and 1 Velcro pad\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eShips fast!\u003c\/b\u003e Usually same day, within 24 hours at most, with \u003cstrong\u003eFree USPS Priority Shipping\u003c\/strong\u003e \u003cstrong\u003ewith tracking\u003c\/strong\u003e (1 biz day processing, 2-3 biz days transit time).\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/aclam-dr-robert-pedal-manual.pdf\" target=\"_blank\" title=\"Aclam Dr. Robert Pedal Manual\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eAclam Dr. Robert Pedal Manual PDF\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eReviews from our Reverb.com customers:\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/review-dr-robert-pedal.png?v=1562297627\" alt=\"review-dr-robert-pedal\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/dr-robert-pedal-review_6552df17-97be-4152-9e25-b8b3803137bc.png?v=1561993291\" alt=\"dr-robert-pedal-review\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/reviews-aclam-dr-robert-pedal.png?v=1561991620\" alt=\"reviews-aclam-dr-robert-pedal\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eOur added value, when purchased here at coolguitarshop.us:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBest Total Price - \u003cstrong\u003e$320 is your absolute final\/total cost\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFast Free Shipping in U.S.\u003c\/li\u003e\n\u003cli\u003eNo Sales Taxes, Duties, or Tariffs (We pay all of these for you.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Risk: Try it on your own rig for 30 days.\u003c\/strong\u003e Don't love it? Return it for a full refund... no questions, no costs. (We'll send you a pre-paid return label.)\u003c\/li\u003e\n\u003cli\u003eRock-solid customer service, \u003cstrong\u003e365 days a year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCraving that late 60s, Vox UL730 Beatles sound? \u003cstrong\u003eDr. Robert\u003c\/strong\u003e will see you soon.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e","published_at":"2019-04-12T12:00:04-04:00","created_at":"2019-04-11T16:17:34-04:00","vendor":"Aclam Guitars","type":"Effects and Pedals \/ Overdrive and Boost","tags":["Brand_Aclam Guitars","Other Features_Handmade","Other Features_True Bypass","Price_$200+"],"price":32000,"price_min":32000,"price_max":32000,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":14601348481087,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"aclam-dr","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Aclam Dr. Robert Pedal - Vox UL730 Beatles Sound Re-Created","public_title":null,"options":["Default Title"],"price":32000,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"8436552761915"}],"images":["\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal_95db4b54-e2d4-40fa-b268-32b856e67dc5.jpg?v=1559969168","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal-2_1e853756-6207-40ba-9299-3de2ed1a374d.jpg?v=1559969163","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal-2.jpg?v=1559969163","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal-6.jpg?v=1559969163","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal.jpg?v=1559969163","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal-3.jpg?v=1559969163","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal-4.jpg?v=1559969163","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal-7.jpg?v=1559969163","\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/video-button_d62513f1-2ed0-4bdc-b732-22be17ccbc36.png?v=1559969163"],"featured_image":"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/products\/aclam-dr-robert-pedal_95db4b54-e2d4-40fa-b268-32b856e67dc5.jpg?v=1559969168","options":["Title"],"content":"\u003cp\u003e\u003cstrong\u003eFast Free Shipping - No Taxes - Free Returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eThe new Aclam Dr. Robert Pedal nails the tone of the Vox UL730\u003c\/strong\u003e, one of the rarest amps of all time, used by the Beatles on their iconic \u003cstrong\u003eRevolver and Sgt. Pepper's\u003c\/strong\u003e records. The Revolver-esque artwork displayed on this pedal is created by none other than \u003cstrong\u003eKlaus Voormann\u003c\/strong\u003e, the designer of the famous 1966 Beatles Revolver album!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cmeta name=\"copied-from\" content=\"wysihtml5\"\u003e\n\u003cblockquote\u003e\n\u003ch3\u003e\n\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003ci\u003e\"There are sounds (on Revolver) that nobody else has done yet. I mean nobody... ever.\"\u003cbr\u003e\u003c\/i\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003ci\u003e- Paul McCartney\u003c\/i\u003e\n\u003c\/h3\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eDr. Robert... what is it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDr. Robert is \u003cstrong\u003eAclam’s newest guitar pedal\u003c\/strong\u003e, that gives you a \u003cstrong\u003eperfect replica of the legendary Vox UL730 amp sounds\u003c\/strong\u003e, famously used by The Beatles, Stones, and Zeppelin!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQUICK FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMach Schau!\u003c\/strong\u003e - Extra saturation function (\u003cstrong\u003eclick both footswitches on\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003eSmart Track Fastening System\u2028\u003c\/li\u003e\n\u003cli\u003eHigh-end components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Bypass\u003c\/strong\u003e switching\u2028\u003c\/li\u003e\n\u003cli\u003eThe closest you can get to the rarest Vox amp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOVERVIEW:\u003cbr\u003e\u003c\/strong\u003eThe Vox UL700 amp series were the secret weapon used by The Beatles to achieve the unique guitar tone on Revolver and part of Sgt. Peppers. \u003cstrong\u003eThey were also used by The Rolling Stones and Jimmy Page of Led Zeppelin.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003eIntroduced in 1966, \u003cstrong\u003ethese state-of-the-art guitar amps mixed a solid-state preamp with a tube power amp section\u003c\/strong\u003e. \u003cstrong\u003e\u003c\/strong\u003eTubes were standard at that time but had the inconvenience of being voluminous and prone to fail, plus they needed bigger transformers due to impedance matching and power requirements. Transistors were the solution as they were way smaller, reliable and took much less energy to operate. So, \u003cstrong\u003ein 1965, Vox engineer Dick Denney decided to develop a hybrid amp with a solid-state preamp and tube powered amp section.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003eThanks to the relatively new transistor technology, lots of features could be added. Top-of-the-line models included two channels with 3 band eq each, distortion, tremolo and reverb. \u003cstrong\u003e\u003c\/strong\u003eThere were many variants with different power ratings, but \u003cstrong\u003ethe ones used by The Beatles were the UL730 (30w) and UL7120 (120w). \u003c\/strong\u003eUnfortunately, aside from The Beatles, those amps weren't popularly used at the time and most of them ended being returned to Vox for their disposal.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eOnly a small number of UL730 units survived\u003c\/strong\u003e (around 20\/30 units as some renown Vox connoisseurs state), attaining the title of being the most collectable Vox amps, with prohibitively collector pricing. \u003cstrong\u003eNow they are the missing link between tube and solid-state amps.\u003cbr\u003e\u003cbr\u003eThe Dr. Robert is based on the Normal channel of our Vox UL730, serial number 3042.\u003c\/strong\u003e We traced the original tag board circuits and measured each component’s value to make the closest replica of the amp’s soul and character.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eOne of the keys of its tone is the “Middle” control\u003c\/strong\u003e, which is one of the most interesting mid-range eq ever found on an amp. By turning it counterclockwise, a great amount of mid-frequencies will be subtracted, creating a scooped sound. On the other hand, when it's turned clockwise it will bring out all the mids, and the signal will build up in gain. \u003cstrong\u003eBy tailoring the “Middle” knob you can control both midrange and saturation.\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003eAs the solid-state preamp of the UL730 doesn’t create much distortion by itself, \u003cstrong\u003eAclam has coupled it with a custom FET saturation engine\u003c\/strong\u003e to mimic the attributes of the tube power amp section. Not happy enough with that? We’ve gone even further, creating the \u003cstrong\u003e“Mach Schau!” section\u003c\/strong\u003e, which adds saturation to your main sound and includes an independent volume control to allow you to have both a rhythmic and a solo tone (\u003cstrong\u003ejust click on both footswitches\u003c\/strong\u003e).\u003c\/p\u003e\n\u003cp\u003e \u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/review-aclam-dr-robert-pedal_80aabc6f-ac53-4085-9a46-0560cdadf5d0.png?v=1562094509\" alt=\"Review of Aclam Dr Robert Pedal by Guitar Player\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSometimes you can’t trust the internet or an old schematic. We’ve found major discrepancies between the published schematic and the real thing, such as component types and values, so we can assure you that this is the closest you can get to the rarest Vox amp.\u003cstrong\u003e Following the preamp there’s a custom FET based circuit emulating the saturation produced by the UL730 EL84’s tube power amp section.\u003c\/strong\u003e \u003cstrong\u003e\u003c\/strong\u003eAdditionally, the circuit works with the same voltages found on the original amp, thanks to a charge pump circuit which \u003cstrong\u003etakes the 9VDC from the battery or DC plug and converts it to 18VDC.\u003cbr\u003e\u003cbr\u003eSmart Track Fastening System:\u003cbr\u003e\u003c\/strong\u003eAll Aclam pedals use a custom enclosure designed to \u003cstrong\u003ematch perfectly with our Smart Track pedalboards\u003c\/strong\u003e. Using the side thumb screws, you’ll be able to safely lock the stompbox into one of our pedalboards. It was also designed with other pedalboard options in mind.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eMach Schau! Function:\u003cbr\u003e\u003cspan style=\"color: #000000; font-family: 'Franklin Gothic Book', sans-serif; font-size: 14.666666984558105px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; display: inline !important; float: none;\"\u003eThe Mach Schau! is a function that you can \u003cstrong\u003eactivate by clicking both footswitches on\u003c\/strong\u003e. It provides \u003cstrong\u003eextra saturation with an independent volume control (MS Vol)\u003c\/strong\u003e. The Mach Schau! is like a distortion pre-set. You will have the base sound with more or less saturation, and from that sound, when you activate the Mach Schau!, you will get even more saturation. With the independent volume control, it allows you to have more distortion at the same volume, or the same distortion raising the volume.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eCustom graphics by Revolver's cover artist, Klaus Voorman:\u003cbr\u003e\u003c\/strong\u003eWe’re so honored to have \u003cstrong\u003eKlaus Voormann, designer of The Beatle’s Revolver album cover\u003c\/strong\u003e, create the artwork for the Dr. Robert pedal!\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eHigh end components and true bypass switching:\u003cbr\u003e\u003c\/strong\u003eWe made an extra effort to put \u003cstrong\u003ethe finest and closest components to the original amp in the Dr. Robert pedal.\u003c\/strong\u003e Carbon comp resistors, Nichicon Fine Gold and Wima caps, Alpha pots and switches, these make the Aclam Dr. Robert pedal reliable, with authentic tone.\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003eCircuit tailored for both guitar and bass instruments:\u003cbr\u003e\u003c\/strong\u003eAlthough based on the UL730 preamp, \u003cstrong\u003ethe UL400 series (designed for bass) shared almost the same circuitry.\u003c\/strong\u003e When doing tests using different instruments and amps, we noticed that \u003cstrong\u003eDr. Robert sounds flawless with bass too!\u003c\/strong\u003e By tuning the FET circuit a bit, we managed to make the Dr. Robert suitable for both guitar and bass. There are no low-end drops, resulting in a prefect preamp and distortion tool to plug direct or into an amp.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCONTROLS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBYPASS SWITCH:\u003c\/strong\u003e Engages the unit allowing the signal to flow through the Dr. Robert circuit. It also lights up the LED above it.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eVOL:\u003c\/strong\u003e Controls the overall volume of the Dr. Robert when you’re not using the Mach Schau! section.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eGAIN:\u003c\/strong\u003e This control is placed in the same position of the circuit as the original UL730’s volume control. Since none of the Vox UL series had a master volume control the user had to turn it all the way up to bring the amp into saturation, and believe us, this thing is loud. To solve that, we put the Vol control at the end of the FET section, so now the volume control on the original amp turns into a gain knob on the Dr. Robert. At lower settings, the Gain knob will produce a clean tone, but as you approach the 12’o-clock mark, the FET section will start entering the saturation region. \u003cstrong\u003eHave in mind that due to Dr. Robert’s great dynamics, different types of guitars and pickups will affect the clean range of the Gain knob.\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMIDS:\u003c\/strong\u003e \u003cstrong\u003eThis is the most critical knob to tailor your sound.\u003c\/strong\u003e Unlike most equalizer circuits (which get placed after or before the volume control) Vox separated the mids control from the rest of the tone stack in the UL730. In this preamp, the signal gets amplified first, followed by the Middle control before the volume pot. After this, Vox placed a special gain stage, coupled with the Bass and Treble controls. Thus, \u003cstrong\u003eyou can control the midrange without interacting with the rest of the eq, as traditional tone stacks do.\u003c\/strong\u003e By turning it counterclockwise, it will subtract a great amount of mid-range, creating a really interesting scooped sound. Turning it clockwise will bring mid frequencies and the overall gain builds up hitting harder the EL84 tubes, creating saturation. \u003cstrong\u003eJust like the real amp does,\u003c\/strong\u003e Dr. Robert’s “Middle” control has the same behavior, thanks to the FET section specially tuned to mimic the power amp saturation on the UL730. So, keep in mind, the “Middle” knob will have a great effect on the overall saturation of the unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMS VOL:\u003c\/strong\u003e Independent volume control for the Mach Schau! section.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMACH SCHAU! Switch:\u003c\/strong\u003e Activates the Mach Schau! Section. It also lights up the LED above it. \u003cem\u003e\u003cstrong\u003e(Note that the Mach Schau! function works only when both footswitches are activated)\u003c\/strong\u003e. This function is not an independent overdrive, but an extra tone of Dr. Robert’s main circuit).\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eINTERNAL CONTROLS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTREBLE Trimpot:\u003c\/strong\u003e Controls the amount of high frequency content of the signal before reaching the FET section. Setting this knob will have an effect over the overall gain.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBASS Trimpot:\u003c\/strong\u003e Sets the amount of low frequency content reaching the FET section. \u003cstrong\u003eThe treble and bass controls work together in a tone-stacked manner, so they are a bit interactive.\u003c\/strong\u003e Both controls are factory set at 12 o'clock.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTRM3 \u0026amp; TRM4 Trimpots:\u003c\/strong\u003e \u003cstrong\u003ePlease don't attempt to adjust these, since they are factory calibrated by Aclam and can void the warranty.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMORE INFO:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003ePower Sources (sold separately):\u003cbr\u003e\u003c\/strong\u003eUses a standard 9 volt battery, or a 9V DC Center-Negative 100mA minimum power supply \u003cstrong\u003e(like Boss and most all other guitar pedals use)\u003c\/strong\u003e.\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong style=\"box-sizing: border-box; margin: 0px; padding: 0px; font-weight: bold; caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;\"\u003eWarranty:\u003c\/strong\u003e\u003cbr style=\"box-sizing: border-box; margin: 0px; padding: 0px; caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;\"\u003e\u003cspan style=\"caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;\"\u003eThis product comes with Aclam's \u003c\/span\u003e\u003cstrong style=\"box-sizing: border-box; margin: 0px; padding: 0px; font-weight: bold; caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;\"\u003e2-year warranty\u003c\/strong\u003e\u003cspan style=\"caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;\"\u003e (see page 27 of the product manual below for details).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"caret-color: #000000; color: #000000; font-family: 'Open Sans', HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5 3\/8\" x 3 1\/2\" x 2 1\/4\" (including knobs)\u003cbr\u003e\u003cstrong\u003eBypass:\u003c\/strong\u003e True bypass\u003cbr\u003e\u003cstrong\u003eCurrent Draw:\u003c\/strong\u003e minimum 40mA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded in Box:\u003c\/strong\u003e\u003cbr\u003e1 Anti-sliding rubber pad and 1 Velcro pad\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eShips fast!\u003c\/b\u003e Usually same day, within 24 hours at most, with \u003cstrong\u003eFree USPS Priority Shipping\u003c\/strong\u003e \u003cstrong\u003ewith tracking\u003c\/strong\u003e (1 biz day processing, 2-3 biz days transit time).\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/aclam-dr-robert-pedal-manual.pdf\" target=\"_blank\" title=\"Aclam Dr. Robert Pedal Manual\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eAclam Dr. Robert Pedal Manual PDF\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eReviews from our Reverb.com customers:\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/review-dr-robert-pedal.png?v=1562297627\" alt=\"review-dr-robert-pedal\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/dr-robert-pedal-review_6552df17-97be-4152-9e25-b8b3803137bc.png?v=1561993291\" alt=\"dr-robert-pedal-review\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/0017\/7779\/5135\/files\/reviews-aclam-dr-robert-pedal.png?v=1561991620\" alt=\"reviews-aclam-dr-robert-pedal\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eOur added value, when purchased here at coolguitarshop.us:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBest Total Price - \u003cstrong\u003e$320 is your absolute final\/total cost\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFast Free Shipping in U.S.\u003c\/li\u003e\n\u003cli\u003eNo Sales Taxes, Duties, or Tariffs (We pay all of these for you.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Risk: Try it on your own rig for 30 days.\u003c\/strong\u003e Don't love it? Return it for a full refund... no questions, no costs. (We'll send you a pre-paid return label.)\u003c\/li\u003e\n\u003cli\u003eRock-solid customer service, \u003cstrong\u003e365 days a year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCraving that late 60s, Vox UL730 Beatles sound? \u003cstrong\u003eDr. Robert\u003c\/strong\u003e will see you soon.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e"}

Aclam Dr. Robert Pedal - Vox UL730 Beatles Sound Re-Created

Product Description
$320.00
Maximum quantity available reached.

Fast Free Shipping - No Taxes - Free Returns

The new Aclam Dr. Robert Pedal nails the tone of the Vox UL730, one of the rarest amps of all time, used by the Beatles on their iconic Revolver and Sgt. Pepper's records. The Revolver-esque artwork displayed on this pedal is created by none other than Klaus Voormann, the designer of the famous 1966 Beatles Revolver album!

"There are sounds (on Revolver) that nobody else has done yet. I mean nobody... ever."

- Paul McCartney


Dr. Robert... what is it?

Dr. Robert is Aclam’s newest guitar pedal, that gives you a perfect replica of the legendary Vox UL730 amp sounds, famously used by The Beatles, Stones, and Zeppelin!

 

QUICK FEATURES:

  • Mach Schau! - Extra saturation function (click both footswitches on)
  • Smart Track Fastening System

  • High-end components
  • True Bypass switching

  • The closest you can get to the rarest Vox amp

 

OVERVIEW:
The Vox UL700 amp series were the secret weapon used by The Beatles to achieve the unique guitar tone on Revolver and part of Sgt. Peppers. They were also used by The Rolling Stones and Jimmy Page of Led Zeppelin.

Introduced in 1966, these state-of-the-art guitar amps mixed a solid-state preamp with a tube power amp section. Tubes were standard at that time but had the inconvenience of being voluminous and prone to fail, plus they needed bigger transformers due to impedance matching and power requirements. Transistors were the solution as they were way smaller, reliable and took much less energy to operate. So, in 1965, Vox engineer Dick Denney decided to develop a hybrid amp with a solid-state preamp and tube powered amp section.

Thanks to the relatively new transistor technology, lots of features could be added. Top-of-the-line models included two channels with 3 band eq each, distortion, tremolo and reverb. There were many variants with different power ratings, but the ones used by The Beatles were the UL730 (30w) and UL7120 (120w). Unfortunately, aside from The Beatles, those amps weren't popularly used at the time and most of them ended being returned to Vox for their disposal.

Only a small number of UL730 units survived
(around 20/30 units as some renown Vox connoisseurs state), attaining the title of being the most collectable Vox amps, with prohibitively collector pricing. Now they are the missing link between tube and solid-state amps.

The Dr. Robert is based on the Normal channel of our Vox UL730, serial number 3042.
We traced the original tag board circuits and measured each component’s value to make the closest replica of the amp’s soul and character.

One of the keys of its tone is the “Middle” control
, which is one of the most interesting mid-range eq ever found on an amp. By turning it counterclockwise, a great amount of mid-frequencies will be subtracted, creating a scooped sound. On the other hand, when it's turned clockwise it will bring out all the mids, and the signal will build up in gain. By tailoring the “Middle” knob you can control both midrange and saturation.

As the solid-state preamp of the UL730 doesn’t create much distortion by itself, Aclam has coupled it with a custom FET saturation engine to mimic the attributes of the tube power amp section. Not happy enough with that? We’ve gone even further, creating the “Mach Schau!” section, which adds saturation to your main sound and includes an independent volume control to allow you to have both a rhythmic and a solo tone (just click on both footswitches).

 Review of Aclam Dr Robert Pedal by Guitar Player

 

FEATURES:

Sometimes you can’t trust the internet or an old schematic. We’ve found major discrepancies between the published schematic and the real thing, such as component types and values, so we can assure you that this is the closest you can get to the rarest Vox amp. Following the preamp there’s a custom FET based circuit emulating the saturation produced by the UL730 EL84’s tube power amp section. Additionally, the circuit works with the same voltages found on the original amp, thanks to a charge pump circuit which takes the 9VDC from the battery or DC plug and converts it to 18VDC.

Smart Track Fastening System:
All Aclam pedals use a custom enclosure designed to match perfectly with our Smart Track pedalboards. Using the side thumb screws, you’ll be able to safely lock the stompbox into one of our pedalboards. It was also designed with other pedalboard options in mind.

Mach Schau! Function:
The Mach Schau! is a function that you can activate by clicking both footswitches on. It provides extra saturation with an independent volume control (MS Vol). The Mach Schau! is like a distortion pre-set. You will have the base sound with more or less saturation, and from that sound, when you activate the Mach Schau!, you will get even more saturation. With the independent volume control, it allows you to have more distortion at the same volume, or the same distortion raising the volume.

Custom graphics by Revolver's cover artist, Klaus Voorman:
We’re so honored to have Klaus Voormann, designer of The Beatle’s Revolver album cover, create the artwork for the Dr. Robert pedal!

High end components and true bypass switching:
We made an extra effort to put the finest and closest components to the original amp in the Dr. Robert pedal. Carbon comp resistors, Nichicon Fine Gold and Wima caps, Alpha pots and switches, these make the Aclam Dr. Robert pedal reliable, with authentic tone.

Circuit tailored for both guitar and bass instruments:
Although based on the UL730 preamp, the UL400 series (designed for bass) shared almost the same circuitry. When doing tests using different instruments and amps, we noticed that Dr. Robert sounds flawless with bass too! By tuning the FET circuit a bit, we managed to make the Dr. Robert suitable for both guitar and bass. There are no low-end drops, resulting in a prefect preamp and distortion tool to plug direct or into an amp.

 

CONTROLS:

BYPASS SWITCH: Engages the unit allowing the signal to flow through the Dr. Robert circuit. It also lights up the LED above it.

VOL: Controls the overall volume of the Dr. Robert when you’re not using the Mach Schau! section.

GAIN: This control is placed in the same position of the circuit as the original UL730’s volume control. Since none of the Vox UL series had a master volume control the user had to turn it all the way up to bring the amp into saturation, and believe us, this thing is loud. To solve that, we put the Vol control at the end of the FET section, so now the volume control on the original amp turns into a gain knob on the Dr. Robert. At lower settings, the Gain knob will produce a clean tone, but as you approach the 12’o-clock mark, the FET section will start entering the saturation region. Have in mind that due to Dr. Robert’s great dynamics, different types of guitars and pickups will affect the clean range of the Gain knob.

MIDS: This is the most critical knob to tailor your sound. Unlike most equalizer circuits (which get placed after or before the volume control) Vox separated the mids control from the rest of the tone stack in the UL730. In this preamp, the signal gets amplified first, followed by the Middle control before the volume pot. After this, Vox placed a special gain stage, coupled with the Bass and Treble controls. Thus, you can control the midrange without interacting with the rest of the eq, as traditional tone stacks do. By turning it counterclockwise, it will subtract a great amount of mid-range, creating a really interesting scooped sound. Turning it clockwise will bring mid frequencies and the overall gain builds up hitting harder the EL84 tubes, creating saturation. Just like the real amp does, Dr. Robert’s “Middle” control has the same behavior, thanks to the FET section specially tuned to mimic the power amp saturation on the UL730. So, keep in mind, the “Middle” knob will have a great effect on the overall saturation of the unit.

MS VOL: Independent volume control for the Mach Schau! section.

MACH SCHAU! Switch: Activates the Mach Schau! Section. It also lights up the LED above it. (Note that the Mach Schau! function works only when both footswitches are activated). This function is not an independent overdrive, but an extra tone of Dr. Robert’s main circuit).

 

INTERNAL CONTROLS:

TREBLE Trimpot: Controls the amount of high frequency content of the signal before reaching the FET section. Setting this knob will have an effect over the overall gain.

BASS Trimpot: Sets the amount of low frequency content reaching the FET section. The treble and bass controls work together in a tone-stacked manner, so they are a bit interactive. Both controls are factory set at 12 o'clock.

TRM3 & TRM4 Trimpots: Please don't attempt to adjust these, since they are factory calibrated by Aclam and can void the warranty.

 

MORE INFO:

Power Sources (sold separately):
Uses a standard 9 volt battery, or a 9V DC Center-Negative 100mA minimum power supply (like Boss and most all other guitar pedals use).

Warranty:
This product comes with Aclam's 2-year warranty (see page 27 of the product manual below for details).

Specs:
Dimensions: 5 3/8" x 3 1/2" x 2 1/4" (including knobs)
Bypass: True bypass
Current Draw: minimum 40mA

Included in Box:
1 Anti-sliding rubber pad and 1 Velcro pad

Shipping:
Ships fast! Usually same day, within 24 hours at most, with Free USPS Priority Shipping with tracking (1 biz day processing, 2-3 biz days transit time).

Aclam Dr. Robert Pedal Manual PDF


Reviews from our Reverb.com customers:

review-dr-robert-pedal

dr-robert-pedal-review

reviews-aclam-dr-robert-pedal

 


Our added value, when purchased here at coolguitarshop.us:

  • Best Total Price - $320 is your absolute final/total cost
  • Fast Free Shipping in U.S.
  • No Sales Taxes, Duties, or Tariffs (We pay all of these for you.)
  • No Risk: Try it on your own rig for 30 days. Don't love it? Return it for a full refund... no questions, no costs. (We'll send you a pre-paid return label.)
  • Rock-solid customer service, 365 days a year

Craving that late 60s, Vox UL730 Beatles sound? Dr. Robert will see you soon.