... pulse width modulation)technology, amplifier operating efficiencies is up to 95%, only about 5% of the output energy ... static-load operating current, the efficiency of power amplifier has been greatly enhanced. E, Quite quiet, ... signal to noise ratio). F, Calm Audio digital power amplifier process superb technology, Lightweight body and the ... weigh8.3kg8.3kg8.9kg8.9kg9.6kg10kg10kg 1 U Digital Amplifier