The Synergy Diezel VH4 Preamp Module is an all-tube, two-channel preamplifier designed to replicate the highly sought-after tones of the Diezel VH4 amplifier.
The Synergy Diezel VH4 Preamp Module is designed to be used with Synergy's modular hardware systems. Engineered with input from Peter Diezel himself, this module features two 12AX7 tubes and independent 3-band EQ controls for each channel, offering authentic high-gain, tight-low-end, and focused midrange sound. It allows guitarists to achieve the brand's signature brutal and refined "savage" tone.
CATHODE SELECT SWITCH
The Synergy Diezel VH4 Preamp Module features a three position switch on the PCB which allows you to configure the input tube bass response to match the original circuit of the selected module. This will affect the feel and tightness.
Synergy Diezel VH4 Preamp Module Features
- Authentic Diezel Tone: Peter Diezel collaborated on the design to capture the exact grind and character of the VH4 amplifier.
- Two Channels: It provides two independent, footswitchable channels with their own gain, volume, and 3-band EQ controls.
- Tube-Based: The module uses two 12AX7 tubes to deliver the dynamic, all-tube response of the original amplifier.
- Synergy System Compatibility: Designed to work within Synergy Amplification's modular platform, allowing it to be swapped in and out of compatible heads or other Synergy modular amps.
- High-Gain Prowess: It's known for its tight low end, cutting top end, and focused midrange, making it ideal for rock and metal music.
Synergy Diezel VH4 Preamp Module Includes
- Synergy Diezel VH4 Preamp Module
- Manufacturer Warranty

Sign Up for exclusive sales and offers!