Article: A Class D Exploration and Comparative Review of PS Audio, Wyred 4 Sound, and XTZ

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Is it normal for these amplifiers to hum? My CrownXLS is set at maximum volume and there is no noise whatsoever. 

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10 hours ago, DuckToller said:

The hum, imho is negligible (for me), and I have heard more unpleasant hum, deriving from an USB mouse connected to the CAPS, in the Class D amps of my subs, which leads me to assume that this technology in fact could be sensitive to external factors. Otoh, if it is well done, the external factors could be as well inaudible. Most important to underline, I have only twice in 5 years pushed my preamp to 12 O'clock for a few songs, and in my memory there had been no audible space left for detecting humming 😉

 

I set my DAC and Amp at max. Volume is controlled at DAW. Thankfully so far no issue. 

 

BTW, I forgot to congratulate you for a well written review. Great job! Thanx.