Synergy Diezel Herbert Pre-Amp

Synergy Diezel Herbert Pre-Amp, Interchangeable all-tube pre-amp module for Synergy amplifiers, Developed by Diezel, 2x 12AX7 tube, 2 Channels, Controls: Ch.1 Gain, Ch.2 Gain, Ch.1 Volume, Ch.2 Volume, Ch.1 Mid Cut, Ch.2 Mid Cut, Bass, Mid, Treble, Switch: Ch.1 Mid Cut, Ch.2 mid Cut, Dimensions (W x D x H): 17.8 x 14 x 3.8 cm, Weight: 454 g, Made in USA ...