Synergy Bogner Uberschall

Synergy Bogner Uberschall, Pre-amp module for Synergy System, Full tube, Designed by Reinhold Bogner, Perfect for solos and metal, The blue channel is based on the second channel of the Bogner Uberschall, The red channel adds additional gain, Three-position cathode selector switch allows the input tube bias setting to be configured for optimal input gain and bass response, 2 Channels, Tubes: 2x 12AX7, Separate 3-band EQ's, gain and volume controls ...