CAJames
500+ Head-Fier
The electrical field is not my expertise, but doesn't that applies to differential amps with single-ended outputs? Just to know more about this topic.
PS: I think differential has the advantage of not sharing ground and not risking to have a ground loop. I'll maybe upgrade my amp to differential when I get the funds to do so, but not for better audio quality, just because I want the cleanest path possible.
I'm not sure what you're asking with differential amps and singled outputs but I think it is this: Doesn't the noise get canceled (rejected) when the differential signal is summed on the single ended outputs, but not the differential outputs because they are not summed?
The answer is the noise in the differential signal is rejected when the signal "summed" by the headphones themselves. The diaphragm is driven by the difference between the + and - channels and that is where noise is rejected. Note also that a single ended connection rejects common noise present in the the signal and ground. Apologies if I missed your question.
As for ground loops, sure differential is cleaner. But IMO a ground loop is (almost always) the result of a problem that needs to be fixed.
And FWIW I like the differential connection from my WA22 to HD-650 better than the single ended.
Last edited: