Free UAD Plug-ins with Every Apollo Purchase!

Save $300 on UAD Accelerators through 12/31! Find a dealer ›

Get up to 70% savings on UAD plug-ins storewide! Shop 12 Days of UAD ›

Hello world 4!

Hello world 5!

Shop huge storewide savings on UAD plug-ins. Extended through 7/22. Shop Now ›

Shop Holiday Deals on UAD Spark. See My Offers ›

Unison Enabled

  • Overview
  • Features
  • Customer Reviews
  • 4.9/5
    (91)

Regular Price: $149.00

$99.00

You'll Save 33%

4.9/5
(91)

A carnivorous high-gain classic
with gorgeous clean tones.

Introduced in 1994, the VH4 amplifier was Diezel's maiden voyage — a 100-watt beast that dropped jaws with articulate cleans, dynamic distortion, and frothy high-gain tones. Still a modern tone giant 25 years after its release, the Diezel VH4 is ubiquitous in heavy rock and metal productions, used by Tool, Metallica, and tons more.

Developed by Brainworx, and officially endorsed by legendary amp builder Peter Diezel, the Diezel VH4 plug-in masterfully emulates this four KT77-equipped 100-watt beast, for UAD hardware and UA Audio Interfaces.

Use your UA Interface to track through the Diezel VH4 — with near-zero latency

Audition 120 separate high-end recording chains, featuring multiple cabinets and classic microphones

Shape tones further with FX Rack’s Vintage Delay, noise gate, high/low filters, and more

Easily dial in insane high-gain tones, dynamic distorted textures, and pristine cleans, with Diezel's original state-of-the art tone machine

Take a Listen

Take a Listen
Four Channels, Tons of Tones

Four Channels, Tons of Tones

Featuring Clean, Crunch, Mega, and Lead channels, the Diezel VH4 plug-in faithfully captures the original amp's glorious sparkling clean tones, simmering medium-gain sounds, and absolutely searing lead textures. No matter what guitar you plug in, the Diezel VH4 plug-in gives you all the tonal touchstones you need to record dynamic, modern guitar sounds.

Diezel FX Rack

Diezel FX Rack

The Diezel VH4 plug-in offers additional control over your tones via the Brainworx FX Rack. It features a Noise Gate, switchable high and low-pass filters, and a Power Soak circuit that allows you to dial in as much overdrive as you want, without having to crank the output gain.

The Diezel VH4 plug-in also includes 120 impulse response Recording Chains that were perfectly captured from several boutique cabinets and recorded through Brainworx's vintage Neve console with an array of high-end and vintage microphones and outboard gear, giving you "record ready" tones, instantly.

Unison<sup>™</sup> Technology for UA Audio Interfaces

Unison Technology for UA Audio Interfaces

Harnessing UA’s groundbreaking Unison technology, the Diezel VH4 plug-in gives you the impedance, gain staging, and circuit behaviors that have made the VH4 one of the most lusted-after tube amps ever made.

Key Features:

Exacting emulation of the original 100-watt Diezel VH4 guitar amp, endorsed by Peter Diezel and Peter Stapfer

Four independent channels for a huge range of tones, from clean to ultra-high gain and all points in-between

120 Recording Chains with multiple speaker cabinets – recorded in Brainworx´s studio using the
NEVE VXS72 console, stellar outboard gear and world class microphones

FX Rack includes host-syncable lo-fi delay, noise gate, filters, power soak, pre and power amp bypass

Unison technology for UA Audio Interfaces

Customer Reviews

Diezel VH4 Amplifier

Overall Rating

4.9/5
(91)

D. Pintaldi

July 11, 2024

Super Versatile Elegant Amp’s Plugin

Every section of this professional amp emulation is perfectly balanced in tone , dynamic response and responsive to guitar’s controls and your hand , I think that It can play in almost every style with every guitars.
The knobs range are perfect !

D. Pintaldi

July 11, 2024

Super Versatile Elegant Amp’s Plugin

Every section of this professional amp emulation is perfectly balanced in tone , dynamic response and responsive to guitar’s controls and your hand , I think that It can play in almost every style with every guitars.
The knobs range are perfect !

F. Prest

July 5, 2024

Just fantastic

Instantly sounds so good, with a wonderful variety of tone options. Couldn't recommend more.

G. Pigman

March 26, 2024

I got blisters on my eardrums, bitemarks on my earlobes.

Yep. It is ALL THAT, and the Reptile Monster it rode in on....

A multitude of tone palettes, clean to crispy, crunchy to volcanic.

This isn't your Grandmother's amp, its a perfectly ravenous creature that tears up all the rest before breakfast.

A. Burns

February 14, 2024

Excellent

Honestly I’ll keep this short. It’s amazing. I love it. Buy it.

J. Newton

January 2, 2024

Great amp for metal

Brainworx did it again. What else can we say.

G. Lebel

October 7, 2023

The best in UAD for guitar

As a devoted fan of Mesa Boogie, I recently tried out the VH4 guitar amp simulation, and I must say, it left quite an impression. While the VH4 has its unique sonic flavor, it satisfies me as much as a Mesa Boogie, thanks to its remarkable realism, precision, and professionalism. I was delighted to discover a wide variety of tones suitable for various styles. However, I couldn't help but feel disappointed by the absence of a built-in tuner(lost 1 star). On a positive note, I appreciate that it falls within the UNISON range, making it a versatile addition to my setup.

P. Mantei

July 8, 2023

So many different tones

We all know most of the tone comes from the cabinet and mic choice. This amp has so many combinations that you can get any tone you want

W. Schurat

January 14, 2023

A beast with a soft charcter

What really got me surprised was the character of the clean tones that are more than useful and convincing

J. Donovan

December 30, 2022

The Diezel VH4 is Irreplaceable

This Amp Plug-in remains a top-flight choice for a wide variety of styles. "Don't mistake this as a metal only amp." It covers a lot ground without compromise. Put it this way. I own a pricey - not to be named amp modeler, yet I continually find myself grabbing the Diezel when I want excellent tone and feel in very short order.

R. Granadillo

December 30, 2022

This is a awesome plugin!!!

Sounds incredible good!! Totally recommend

M. Ahmad

December 23, 2022

My DIEZEL!!

guitar amp for heavy & anything.. great job for unison Technology

a. maceroni

December 16, 2022

Real

One of the most faithful emulations I have heard

S. Ramsey

November 13, 2022

Clean

Best clean guitar sound i have heard. Love it!!

G. Christiansen

September 14, 2022

Vh4 with superior sound on both the diezel amp and as an Cab impulse

I bought this to use it as a Cab Impulse for my amp heads, and it sounds very organic and real. With the power amp section using the presence and depth It gets Even better.

One could only wish for a dedicated uad Ir loader based on this VH4, but the diezel vh4 works just as good!

K. Kamonrat

August 5, 2022

vh4 good plugins

good sound good dynamic

J. Marth

June 24, 2022

Great Diezel Sound

Both Diezel Amp Sims sound great, but I prefer the VH4. Channel 4 plus some EQ makes your metal sound shine

e. vantroyen

June 21, 2022

Sounds real in a mx

I love that one, even better than the Herbert. That Unison gives life to Amp Sims.

A. Portillo

June 16, 2022

Too good to be true

The simulation is superb. UAD as always making unbelievable analog sims. I recommend it to all guitar players. This is a beast amp.

D. Diadema

June 10, 2022

Very good but... No IRs...

I own the VH4 and the Herbert which both sound pretty good! But neither of them can support third party IRs... That is REALLY a big limitation for using those plugins live. Of course you can do whatever you want in your daw, bypass the cab section and add your own IRs afterward. But adding your own IRs, that would be a HUGE upgrade. The Apollo could definitely compete with any Axe FX or Helix.
Pretty please UAD?? :)))