... 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 ... 950W2×1200W2×1600W2×2500W2×2800W2Ω2×650W2×900W2×1400W2×1800W2×3000W2×3900W2×4300WTHD+NRated power,THD=1%,1KHZ<0.06%max ...