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Dr. Robert

The sound of a rare '66 VOX UL730 now on your board

AP0111

In stock

$348.03

Contact us if you have questions about taxes or shipping costsrn

Dr. Robert is based on a real VOX UL730 S/N 3042. The rare amp behind some of the tones heard on Revolver & Sgt. Pepper’s. Only 100 units of this amp were produced and most of them were destroyed. This is the closest you can get to the amp! 

The artwork was created by Klaus Voormann. The artist behind The Beatles' Revolver cover.

→ Discover the VOX UL730 story

KEY FEATURES

• Based on a real VOX UL730 S/N: 3042

• Mach Schau! function, now with external Gain Control

• New LO/HI Gain Modes for more usable rang

• Same 3 Band Equalizer, now with external Treble and Bass controls

• Works across guitar & bass setups

CONTROLS



DEMOS

  
  
  

 

lifetime warranty30 days money backPayPal Pay in 3
LIFETIME WARRANTYMONEY BACKPAYPAL PAY  IN 3

FEATURES

Weight
385 g (0.91lb)
Dimensions
13.6 × 8.7 × 5.5 cm (5.4" × 3.4" × 2.2") with knobs
Included
4 x Rubber feet
Effect
Overdrive
Power
9V DC Center Negative 40mA minimum
Current Draw
≈10 mA
Bypass
Relay True Bypass

What customers think about this product?

(5/5

great sound !!

feel like a beatle !! great revolver sound !!
in love with this pedal !

- 17 July 2026
(5/5

Dr Robert

Great pedal and I love the artwork

- 13 July 2026
(5/5

An interesting product

I have been looking at the Dr. Robert for some time now - and listening to the demos - and finally took the plunge! I am very glad I did :-)

I needed a pedal that could offer both grunge and outright overdrive and these really are not easy to find. The two basic gain settings offer a wide palette to choose from and the controls on the pedal actually do something, especially the Mid tone control which provides a range of character all by itself. The 'Mach Shau' setting is possibly amusing but also really useful by giving that bit of extra 'push' when needed.

An advantage I think I have at times is that as well as being a musician, I am also a sound engineer and this lets me get a technical perspective on equipment. Something I noticed very quickly with the "Dr. Robert" is that it maintains a clarity of the notes even with high levels of saturation. It also almost gives a doubling effect, which broadens the spectrum of the signal and I wonder if there is not a little delay circuit in the unit.

I thoroughly recommend this pedal (and am waiting to get a Mocker) but permit myself to give a thought to a first-time user. As the specs say, the pedal is a recreation of the VOX UL 730, which is fine for me as I am the enthusiastic user of a vintage AC30TB (plus other amps), but the situation is that one is using the pedal into an amplifier, rather than going straight into the pedal and then a power amp (one could possibly try plugging directly into the "Dr. Robert" and taking the output into a power amplifier or insert return on a guitar amplifier if available). This would mean that the characteristic of the UL 730 could be exploited more fully. However, if you want to keep it simple, I would suggest that you set up your amplifier to taste with the pedal bypassed before bringing in "Dr. Robert" to the gig ;-)

Speaking of Bypass, it is a small point but it would be useful for Aclam to point out that when the Bypass switch is used, i.e. in Bypass, the associated LED is off and not on! This kind of situation can be a moot point in audio but when a function is associated with a control - in this case, a switch - the status LED is turned on when the control is activated. You press Bypass, the unit is bypassed and in my opinion, the LED should indicate this. If the switch was marked "IN", this would be a different matter. OK, I could be nit-picking but on a busy stage this is the sort of situation that can cause confusion...

Still 5 out of 5!

Terry Nelson

- 07 July 2026
(5/5

El PEDAL IMPRESCINDIBLE

Moltes gràcies Aclam, es el pedal que sempre havíem volgut.

- 18 May 2026
(5/5

Exceptional....

Just a fantastic piece of gear... Everything Brilliant about it.... i have nothing else to agree... just Blooooooody good...

- 09 March 2026
(5/5

You’ll pay money just to see yourself with…

Awesome pedal, so versatile especially with the new EQ knobs, I had the first version and this V3 is a great upgrade. From subtle clean to heavy distortion, and everything in between. Great for recreating beatles tones but also great on any pedalboard to add more possibilities. Fully recommended

- 25 Feb. 2026
(1/5

Worked for two years only

The pedal worked for two years with very little use. It now produces a thumping noise. Not usable at all. No response from Aclam to my inquiry. The website says: lifetime warranty.

Thank you for bringing this to our attention, and apologies for the inconveniences. We are reaching out to you directly to resolve the issue as quickly as possible and ensure it is properly taken care of under our lifetime warranty.

Aclam reply on 14 Jan. 2026
- 13 Jan. 2026
(4/5

Dr Robert

A faithful replication of the Vox amps The Beatles used on Revolver and Sgt Peppers. An excellent overdrive effect pedal in it’s own right and a must for anyone chasing Beatles tones.

- 05 Dec. 2025
(5/5

At Last the Sound

Ever since I watched the Beatles on the Sullivan Show I was hooked. I've played guitar for many years and tried many products but not until I purchased and heard the "Dr, Roberts v3" did I get the sound that I was chasing. The pedal is amazing, and the amp simulation is spot on. It is definitely worth the money, really, go get one!

- 03 Dec. 2025

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