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Dr Robert
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Dr. Robert

The sound and response of our 1966 VOX UL730. Now at your feet

AP0111

In stock

$348.03

Final price may vary depending on destination, shipping, taxes and import duties.

THE STORY

Built from the real thing

Dr. Robert is based on our own 1966 VOX UL730 S/N 3042, the rare amp behind some of the most distinctive guitar tones heard on Revolver and Sgt. Pepper’s. With only around 100 originally produced, the UL730 has become one of the hardest VOX amps to find today.

The artwork was created by Klaus Voormann, the artist behind The Beatles’ iconic Revolver cover.

Discover Dr. Robert →

Discover the VOX UL730 story →
PRODUCT OVERVIEW

Key features

Built from the real amp

Based on our own 1966 VOX UL730, S/N 3042.

Dynamic, amp-like response

Wide gain range with an expressive, responsive feel.

Mach Schau!

An extra saturation stage with its own Gain control.

LO / HI Gain modes

LO mode makes it easier to match different guitars and pickup types while dialing in cleaner or edge-of-breakup tones. HI mode restores the classic Dr. Robert gain structure.

3-band EQ

Mid, Bass and Treble controls for precise tone shaping.

Guitar & bass ready

Works beautifully across both guitar and bass rigs.

EXPLORE THE PEDAL

Controls

HEAR IT

Demos

TECHNICAL DETAILS

Specs

Weight
385 g (0.85 lb)
Dimensions
13.6 × 8.7 × 5.5 cm (5.4" × 3.4" × 2.2") with knobs
Included
4 × Rubber feet
Effect
Overdrive
Power
9V DC · Center Negative · 40 mA minimum
Current draw
≈10 mA
Bypass
Relay True Bypass
NEED TO KNOW

DR. ROBERT FAQ

Is Dr. Robert only for Beatles / Revolver tones?

Not at all. Revolver is where the story began, but the VOX UL730 went far beyond The Beatles, with its distinctive character also associated with artists such as Led Zeppelin and Joy Division.

Dr. Robert takes that character into much broader territory. It works across many different styles, not just ’60s sounds.

Want to hear what other players have done with it?

Listen to songs recorded by Dr. Robert users →

Does Dr. Robert work well with bass?

Absolutely. Dr. Robert works great with bass. It has been used by the bass players of Liam Gallagher and Mando Diao, and its designer is a bass player himself and has extensively used it live and in the studio as both a preamp and an overdrive/fuzz.

Which amp works best with Dr. Robert?

Thanks to its British DNA, Dr. Robert feels particularly at home with British-style amps such as Vox and Marshall, especially EL84 and EL34-based designs. But it was designed and tested to work with a much wider range of amplifiers.

During its development, we tested it with everything from a 1964 Vox AC30 and Marshall JTM45 to Fender Deluxe Reverb and Twin Reverb amps, as well as a Mesa/Boogie Stiletto Ace with great results across very different setups.

In fact, despite its British roots, our designer's favorite pairing was a Fender Deluxe Reverb. For a great lower-volume setup, a Vox AC15 is also an excellent match.

We haven't found an amp that Dr. Robert simply doesn't get along with.

What’s new in Dr. Robert V3?

Dr. Robert V3 keeps the sound and character that made the original Dr. Robert unique, while making it more versatile and easier to use.

The internal adjustments for Bass & Treble EQ and the Mach Schau! Gain found on previous versions are now accessible from the front panel, giving you direct control without having to open the pedal. V3 also introduces the new global Lo/Hi Gain mode that makes the pedal more versatile than ever.  

Can I use Dr. Robert directly into a DAW without an amp?

Dr. Robert can be used in an ampless setup, but you'll need some kind of amp and/or speaker simulation after the pedal before going into your DAW or mixing board.

At Aclam, we use a Two Notes Torpedo C.A.B. to test pedals before they ship and have had great results with it. Other amp/cab simulation solutions and plugins will work too, so you can choose the setup that best fits your rig.

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What customers think about this product?

9
Write a review
(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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Product specifications may change on occasion, our policy is to continually improve our products. Aclam Guitars reserves the right to change any price or specification without prior notice.

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Aclam Guitars is the commercial brand of the company GUITAR TRACKS SL, with registered office at Passatge Can Polític Nº17, 7è 2a 08907 Hospitalet de Llobregat, telephone number 93 170 17 67. This company is registered in the Commercial Register of Barcelona, with CIF: B19726355

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