Musical Fidelity - M3si (Black) Dual-mono circuit layout which reduces the noise floor and greatly increases dynamics Circuit design delivers much more controlled bottom-end and unmatched transient speed. Delivers 76 watts per channel Distortion at 1 kHz is very low at 0.007%. Even at 10 kHz it is hovering around 0.01% Accurate RIAA equalization, within \xb1 0.5dB from 20 Hz to 20 kHz. The accuracy is maintained out to 50 kHz. Noise ratio is an outstanding 88dB down. Distortion is less than 0.3%