Helix C Four 4 Channel Class A B High End Amplifier Active Crossover 4x150w RMSHELIX C FOUR Audiophile sound quality combined with impressive output power The C FOUR is a high end 4 channel amplifier that has been designed down to the last detail for ultimate sound quality. Audiotec Fischers proprietary ultra low noise and ultra low distortion Class A driver stage feeds a total of 32 hand selected MOSFET power transistors, resulting in an incredible damping factor of 1,000 for relentless control of every loudspeaker. The