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Aclam Dr Robert Overdrive Pedal

The Beatles in a Box

Written by

Cian Hodge

Beatles fans, come together. Aclam have modelled the Dr. Robert overdrive after the rare Vox UL730 solid-state preamp, used extensively by The Beatles as well as other monumental names like Led Zeppelin and the Rolling Stones. 

You'd be right in thinking the artwork looks familiar - Klaus Voorman is the man responsible, who designed the cover for their iconic Revolver album. You still can't escape Beatlemania in the 21st century.

How to Get the Classic '60s Guitar Sound with Aclam Pedals!


Based on the Vox's Normal channel, the Dr. Robert is an uncanny replica of the original used on both Revolver and Sgt. Pepper's Lonely Hearts Club Band. It was the true secret weapon of their guitar tone.

Only a small number of UL730 amps have survived to the present day, so you'll be getting your hands on an extremely exclusive tone. The Dr. Robert captures the essence of one of the first hybrid amps ever created. It sounds great either through guitar or bass and performs admirably to cancel out low-end drops.


The controls include your standard volume, gain and middle, with the latter key to scooped British tone when rolled off and unprecedented saturation cranked high. Everything sounds tight through switching thanks to supreme Alpha pots and switches and the finest Wima caps. 

Aclam have added their own Mach Schau! custom FET circuit to the mix just for good measure. This mimics the feel of the tube power amp section, saturating things even further and makes for a great lead tone. Adjust using the independent volume control.


As with all Aclam pedals, the Dr. Robert features a custom enclosure with side thumb screws to fasten the pedal to Aclam pedalboards and select boards from other brands.


  • Dimensions: 13,6 x 8,7 x 5,5cm (5,4” x 3,4” x 2,2”) with knobs
  • Bypass: True bypass
  • Current Draw: minimum 40mA
  • Power requeriments: 9V DC Center Negative 100mA minimum or a a 9V battery
  • Included: 1 x Anti-sliding rubber pad & 1 x Velcro® pad
Inc. VAT

5 In Stock

Order now for delivery to you on Friday, 25 June 2021  

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