Detail 01
Independent three-band EQ per channel
Rhythm and lead channels can be shaped separately rather than sharing one EQ section.
Product detailSKU #1500000229873
SynergyDiezel VH4 Tube Preamp Module
metalthrash
1/2
Independent shopping perspective
The Korena take
Built around the VH4 circuit by Peter Diezel, this two-channel preamp module puts separate rhythm and lead setups under one roof. Each side gets its own gain, volume, and three-band EQ, so a crunchy setting and a more intense high-gain sound can stay independently dialed in. Its 12AX7 preamp section is voiced for the VH4’s articulate, aggressive character, with enough gain range to move from vintage crunch into metal territory without rebuilding the rest of your settings.
Strong match
Who this is for
- Keeping separately EQ’d rhythm and lead sounds ready for quick channel changes.
- Building guitar parts that move from vintage crunch into more intense high-gain settings.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Cathode Select switch
Three PCB settings alter the input tube’s bass response, feel, and tightness; it arrives on position 2.
Final check
Know before you order
- 01The module is preset to Cathode Select position 2 (2.7K resistor and .68uf capacitor).
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I EQ the two channels separately?
Yes. Each channel has its own gain, volume, and three-band EQ controls.
02What does the Cathode Select switch change?
It configures the input tube’s bass response and affects feel and tightness.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSize & weight
- Weight
- 1
