|Simultaneous High Current/High Voltage Magnetic Field Power Amplifier. The TFM-55 can bring any speaker system under tight, authoritative control, yet with a warmth that rivals tube designs. Transfer Function Modified to provide sonic quality that closely matches tube amplifiers. 350 watts per channel into 8 ohms. 600 watts per channel into 4 ohms. 650 watts per channel into 2 ohms. 1200 watts bridged mono. Patented Magnetic Field Power Supply provides extraordinary power from a compact design. Features analog power meters with meter range switch. Concentric left/right level controls. Special circuitry to protect both the amplifier and loudspeakers from overload.