400W MONO / STEREO AMPLIFIER   Universal, robust and compact are the words to describe this amplifier. Universal : A stereo or a mono amplifier. Three input sensitivities are selectable. Robust : Overload and short-circuit protection, protection against incorrect power supply polarity and thermally protected too (option for K4005). Speaker transient suppression. Compact : The PCB housing also functions as the heatsink. The amplifier may be used as a built-in module, or as a freestanding unit using one of our enclosures.  Specifications rms output power: 2 x 100W / 4ohm ; 2 x 75W / 8ohm rms mono-bridged power: 200W / 8ohm total music output: 400W harmonic distortion: 0.003% at 1kHz signal-to-noise ratio: 96dB (A-weighted) stereo channel separation: 76dB damping factor (at 100Hz): > 2000 input impedance: 22kohm input sensitivity: 150mV, 300mV or 950mV switchable supply voltage for 8 ohm: + 40 to 45VDC and - 40 to 45VDC / 2.5A supply voltage for 4 ohm or mono: + 30 to 35VDC and - 30 to 35VDC / 5A dimensions: 350 x 62 x 85mm (13.8" x 2.5" x 3.4")