Class D "efficiency" is utter and complete bullsh#t.
Having another bad day again, huh?
Here are some Japanese amps and their idle power drawn (source: Stereoplay magazine - Germany).
Yamaha M-5000 - 56W
Yamaha A-S3200 - 50W
Yamaha A-S1200 - 50W
Accuphase E 460 - 82W
Luxman L 509u - 77W
Luxman L-505uXII - 93W
Luxman SQ-N150 - 82W
Luxman L-550AX - 168W
Luxman MQ-300 - 154W
Luxman L-595ASE - 160W
Not to mention other brands from other countries.
Octave Audio Jubilee 300B - 331W
T+A M 40 HV Anniversary Edition - 220W
T+A PA 3100 HV + PS 3000 HV - 198W
Dan D'Agostino Momentum Integrated - 210W
Dan D'Agostino Progression Integrated Stream - 120W
Pass INT-250 - 240W
Rotel Michi M8 Mono - 93W
Krell Evolution 402e - 342W
Let's not even compare efficiencies when musical power is drawn!
It was a long time that we didn't get "Class D is bad" thread. I was somehow missing it. Or not.
An Arthur 4215/E2 eats less than 0.5 W in standby, 12 W when idling. In idling 9 W are eaten by the power supply, not related to class D, and 3 W by the 2 1ET400A modules that happen to be class D. In my book it's quite efficient.
+1