... friction, lower static-load operating current, the efficiency of power amplifier has been greatly enhanced. E, Quite quiet, zero noise, ... signal to noise ratio). F, Calm Audio digital power amplifier process superb technology, Lightweight body and the unique performace Patent ... responseRated power,20hz-20khz,<+/-0.2dbInput inpedanceRated power ,1khz 20 k ohm(W×D×H)mm485mm×46mm×47mmDamping factor overAt ...