Diezel's Herbert in a Synergy Preamp Module Diezel's Herbert is a fire-breathing monster that is famous for its tight bottom end, percussive attack, and out-of-this-world articulation. The Synergy Diezel Herbert module boasts two channels of bone-crushing sound, arming you with everything from hard rock crunch to djent-ready riffage and searing high-gain leads. A great match for extended-range and down-tuned guitars, the Herbert module includes a global 3-band EQ for general sound shaping, along with per-channel Gain/Volume knobs for custom-tailored gain staging. You also get per-channel Mid Cut switches and knobs, enabling you to fine-tune separate rhythm and lead tones. If you're craving the muscular high-gain tones that Diezel made famous, the Synergy Diezel Herbert is the right preamp module for you.Synergy Amplification Merriam-Webster defines synergy as "a mutually advantageous conjunction or compatibility of distinct business participants." With Synergy Amplification's assemblage of tube-amp talents such as Dave Friedman (Friedman), Joe Morgan