V4 The Duchess Valve Amp
V4 The Duchess Guitar Amp
V4 The Duchess Guitar Amp Reverb
V4 The Duchess Guitar Amp

V4 The Duchess Guitar Amp

Powerful, ultra-compact and lightweight single-channel guitar amplifier

for home, studio and live stages

Four valves in the front end, 180-watt power section, reverb and tremolo. Only 1.7kg / 3.75lbs – a guitar amp revolution! 

V4 The Duchess partners a V4 Series all-valve preamp with a solid-state, 180-watt Class D power amp. Its ultra-compact size and negligible weight disguise the huge tones it can produce. It's great for home and studio players looking for an elegant solution on a small cab or desktop, or for touring musicians who need a great-sounding, dependable pedal platform amp.

Victory V4 The Duchess Guitar Amp - Front
Victory V4 The Duchess Guitar Amp - Back
Guitarist10_10 score.png
A word from Martin Kidd, Victory's Chief Designer...

“Victory has always valued portability and great tone: our Compact Series heads have been on professional stages all over the world since their introduction in 2013. In 2019 we introduced the V4 Pedal Preamps: the world’s first guitar pedal preamps with four valves. They are a fantastic solution for players who want a pro-standard valve preamp/front end to augment their existing amps, or indeed for pedalboards, fly rigs and/or rented amps.

“The new V4 Guitar Amp was the obvious way forward: let’s add a lightweight power section to that all-valve front end. We knew we could design a superb sounding amp that wasn’t compromised by a lack of power, lifeless tone or burdened with endless options that you never use. Instead it partners our heritage in great valve tone with a laughably lightweight yet seriously loud solid-state power section.


"The result is a simple, professional-grade guitar amp that you can take anywhere. The front end takes your drive pedals exactly as you want it to, there’s an effects loop, plus on-board digital reverb and tremolo for ambience.

“What about speaker emulation and IRs? We’ve deliberately left them out. Everyone we talk to seems to prefer their own personal IR solution, whether that’s hardware or software. There are a great many options available and the pace of development in that world is vertical. The great news is that V4 The Duchess Guitar Amp will run happily without a speaker load if you just want to use the direct output... or run a speaker cab and the DI however you see fit.


"It’s quite the little box!”


Speaker Cabs, Power & Impedance

Speaker choice is critical with V4 The Duchess Guitar Amp


V4 The Duchess can put out a staggering 180 watts at 4-ohms (through the Victory V112 Neo cabinet, for example). However, 4-ohm speaker cabs aren’t exactly common, and nor are single speakers that can take 180 watts, so please proceed with caution with a 4-ohm load.



The nature of Class D, solid-state power sections such as this means that the amp’s output is dependant on the speaker load. If you use a more common 8-ohm cab, output power drops to approximately 90 watts. 16-ohms gives you a still-very-healthy 45 watts.

The principle reason we went with the 180-watt output is because lower-powered solid-state devices can run out of volume and headroom very quickly once you get to 8- and 16-ohm loads.


No such problem here: there’s plenty of power no matter what cab you use.

Victory V4 The Duchess Guitar Amp - Master Volume

Volume & Master

Balance the front end preamp gain with the overall volume output. It will overdrive in the preamp slightly should you want that, but the main goal is higher-headroom tones and power.

Victory V4 The Duchess Guitar Amp - Reverb Control


Lush sounding digital reverb gives you ambience aplenty. Run it low for a subtle feeling of space, or max it out for washy, splashy hugeness! 

Series Effects Loop

Sits between the preamp and power amp. Run your time-based effects here for maximum clarity.

Victory V4 The Duchess Guitar Amp - Line Out

9V DC Power Output

Want to power some extra pedals and stick this on your board? We've included a 9V DC centre-negative output that will put out a maximum of 500mA. This is more than enough for the vast majority of drives, fuzzes and analogue delays and so on. 

Three-Band EQ

Powerful bass, middle and treble controls to shape your tone. These also have an effect on the gain character and drive levels – just like in any valve guitar amp.

Victory V4 The Duchess Guitar Amp - Tremolo


From slow and pulsing to fast and staccato, we’re suckers one of the oldest effects in the book.Turn it on/off on the chassis, or remotely.

Victory V4 The Duchess Guitar Amp - Line Out

Balanced Line Out

Send a direct feed to a separate speaker simulator, front of house or wherever you like. Can be used with or without a speaker connected.


Direct Sounds & IRs

V4 Guitar Amp Direct Sounds and Impluse Responses

Going direct with IRs?


Many people like to go direct when either recording or playing live, using digital speaker impulse responses instead of physically mic’ing an actual cab. It’s incredibly convenient for quiet stages and ‘silent’ recording or practise at home.

V4 The Duchess Guitar Amp comes ready for this. It will operate safely with no speaker load attached, so you can run straight to your speaker modelling solution, front of house or recording DAW with a direct feed. You can also have a speaker attached if you want.

We have deliberately chosen to NOT include any digital speaker simulation technology in V4 The Duchess Guitar Amp itself. They are available widely in hardware and software formats and everybody seems to prefer something different. We’ll leave that decision to you in the knowledge that the IR market is developing at lightning pace.


Your V4 The Duchess Guitar Amp is simple, loud and highly portable. It will remain relevant and great sounding for years to come! 

V4 The Duchess Guitar Amp - Tech Spec & Info

Format: Guitar amplifier head

Preamp valves: 1 x EC900, 3 x CV4014

Power output: 180W @ 4 ohms (approx 90W @ 8 ohms, 45W @ 16 ohms)

Power requirements: Mains IEC
Size: 225(w) x 175(h) x 100mm(d) inc feet & knobs

Weight: 1.7kg (3.75lbs)

Extra features
  • Aluminium chassis

  • Reverb

  • Tremolo

  • Remote switching for trem

  • Series FX loop

  • Balanced DI out on TRS 6.3mm jack

  • Additional 9V DC power outlet for pedals etc (maximum total current 500mA, centre-negative)

Valve Warranty
  • All Victory products come with a 5-year limited warranty. This covers any defects in manufacturing or faulty components.

  • The valves used in the V4 Amp Series were originally manufactured to NATO specifications. Due to the extremely high-quality construction and proven reliability we have taken the unprecedented step of extending the warranty of these from 90 days to 2 years.


Recommended Cabinet

This mighty sounding 1x12 uses a Celestion Neo 250 Copperback speaker. It's a very powerful and efficient driver that uses a neodymium magnet (instead of the more common and much heavier ceramic or alnico). As such it is a very transparent sounding cab that does not have the cone break-up or midrange growl of a more traditional Celestion speaker. Tremendous power and clarity is what you get… and surprisingly light weight too.
Victory 1x12 Neo Speaker Cabinet
V4 The Duchess Guitar Amp 3/4

Official Video

Where can I find one?