Bruce Egnater is the father of the modular tube amp. His own preamp system and the later preamps made by Randall made it possible for guitarists, to assemble their dream amp without much effort. The Synergy amps and preamps are the logical next step of this trend-setting concept. Bruce Egnater has called numerous amp designers on board - exquisite names like Friedman, Morgan, Soldano, Diezel, Engl, Metropoulos etc. have developed modules for the Synergy system. The 2-channel modules can be combined as desired, so that Synergy amps and preamps can be put together individually.