DR. ROBERT V3 by Aclam Guitars


The Dr. Robert overdrive effect pedal is the most accurate replica of the iconic VOX UL730 amp. Made famous by The Beatles as they used it on Revolver & Sgt. Pepper's albums. 

Only 100 units of this VOX UL730 were produced and most of them were destroyed.

Klaus Voormann has created the artwork for the Dr. Robert pedal.

DR. ROBERT - MAIN FEATURES

  • REPLICA OF THE VOX UL730 S/N: 3042

We’ve found some internet and old schematics but major discrepancies between the published schematic and the real thing were detected. We checked every component type and value so we are 100% sure this is the closest you can get to the rarest Vox amp.

The pedal also works with the same voltage the original amp does, the circuit takes the 9VDC and converts it to 18VDC.

  • MACH SCHAU! (EXTRA FEATURE)

Get more saturation with an independent volume control. Use it in solo parts to raise the volume or just to have more distortion with the same volume.

"Mach Schau!" was shouted by the businessman from one the Hamburg's venues when The Beatles resided in Hamburg when energy fell flat, and they had to put on more of a show.

  • DR. ROBERT WORKS FOR GUITAR & BASS

The VOX UL400 series (designed for bass) almost have the same circuitry than the VOX UL730 preamp.

We tunned the FET circuit so Dr. Robert sounds flawless with bass too. No low-end drops resulting in a great preamp and distortion tool to plug directly to the desk or into an amp.

  • HIGH END COMPONENTS AND TRUE BYPASS SWITCHING

You will find the finest and closest components to the original amp on the Dr. Robert: Carbon comp resistors, Nichicon Fine Gold and Wima caps, Alpha pots and switches...

  • BASS AND TREBLE INTERNAL CONTROLS

The original VOX UL730 had a 3 band eq: Middle, Bass and Treble.

Middle control is the one that helps to tailor the tone better, that is why this is one of the main controls. You can access to Bass and Treble controls inside the pedal.

  • ARTWORK MADE BY KLAUS VOORMAN

Klaus Voorman, designer of The Beatle’s Revolver album cover sign the artwork for the Dr. Robert.

  • TAKE ADVANTAGE OF THE SMART TRACK FASTENING SYSTEM

Our pedals use a custom enclosure designed to match perfectly our . Using the side thumb screws you will attach and lock the pedal into the pedalboard, with no risk to loose it or to get robbed easily.

It also comes with a high quality so you can use it on any other pedalboard in the market.

DR. ROBERT - TECH SPECS

Dimensions:13,6 x 8,7 x 5,5cm (5,4” x 3,4” x 2,2”) with knobs
Bypass: True bypass
Power requirements: 9V DC Center Negative 100mAminimum or a 9V battery
Current draw: ≈40 mA

Learn more about the Dr. Robert effect pedal at: aclamguitars.com/dr-robert



International buyers are responsible for any import duties, taxes, tariffs, or customs fees required by their country. These charges are not included in the item price or shipping cost.

Please check with your local customs office before purchasing, as delivery delays may occur due to customs processing.

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • Dr. Robert Overdrive
Categories
Year
  • 2025
Made In
  • Spain
Pedal Format
  • Standard

Product safety information may be available here.

Aclam

Hospitalet de Llobregat, Spain
Joined Reverb:2018

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