RD Amplification DUALIST Custom vintage guitar amplifier



Introducing the DUALIST Custom, our flagship cascaded gain dual-mode amplifier. Experience sparkling cleans, edge-of-breakup tones, and classic overdrive reminiscent of the best amps from the late 70s and early 80s. With its versatile “Single” mode utilizing a preamp tube for clean to breakup response and “Dual” mode cascading into a second tube stage for singing lead tones, this amplifier offers a range of expressive possibilities. Tweak your tone with the Bright and Fat switches and activate the preamp Boost function in both modes. Plus, enjoy the flexibility of optional dual and boost functions with our RDA boutique built footswitch. With a tube Buffered FX Loop, lush tube Reverb, and a tactile, responsive Cathode Biased output stage, this amp delivers the tone and power you desire. Customize your output stage with various tube options, as our amps are all bespoke and built to order. Discover your perfect sound with RD Amplification’s DUALIST Custom.

RD Amplification DUALIST Custom vintage guitar amplifier

Head starts £2550

Combo £2700

+ [£? your choice speaker/s]

Speaker cabinet £400

+ [£? your choice speaker/s]


All our amps are available in two chassis sizes depending on requirements and tube set specification.

Combo or Head options with additional matching speaker cabinets can be supplied in a variety of finishes. The prices listed are for typical regular tolex and levant covering with additional surcharges for Tweed or Special Custom finishes priced on availability.


Finished cabinets and combos are priced without speakers, since our customers request a variety of speaker options and configurations which can vary considerably in cost.

We can advise you on speaker options, but if you know what you like we can buy them in for you at cost, or you can send them directly to us from your chosen supplier or we can fit speakers you already have available.

Nothing is too much trouble, just ask. 


Regarding finish styles, materials, grille cloth and speakers … if we can get it.. we can finish it.





The concept behind the DUALIST Custom was to provide something just a little bit different whilst embracing the best of a great tradition of classic guitar amplification.


To facilitate the more extreme Heavy Metal and Hard Rock players we have taken our classic DUALIST Custom dual-gain preamp circuit and re-worked it into a hardwired none-switching single-channel version destined to melt your face!


The '8-Ball Custom Reverb' is a straight ahead reverb amp based on the 'Single' mode of our classic DUALIST circuit. Essentially pitched as a straight ahead 'clean' amp for those players who do not require the overdrive from the preamp.

BASS 100

A pure all-valve circuit with some suitable component tweaks for bass EQ in the preamp, and typically employing an output stage utilising either pairs of KT88, 6550 or quad 6L6.

“So overall - wow!”

I thought it would be good, but have to say mate, you've exceeded my expectations. A really, really fabulous amp ...! Thanks again - it's already a joy, and that's before I've really got to know it and live with it. Superb stuff.

Spike Stockdale
Totally Blondie


My new Dualist is an amazing sound machine - Rob has the nack no doubt about it - played my second gig with it this weekend (after he tweeked the tone for me), and I can not imagine playing without it now - what a sound, from shimmering glassy crunch, to balls out overdriven valves - This is an amazing amp - if you want a great sound, get one.

Richard Dorman
Guitarist | United Kingdom