Presumably He bought a used DAC out of warranty and not from his local dealer who should do what ? At a minimum ship it yourself to Ayre on your $can and see if it’s broken or normal transformer hum ,
and why hijack a perfectly good thread on the twenty upgrade...
now if I were the dealer and you brought it in, plugged it into my pole pig and it hummed more than normal ( and yes I have an Ayre DAC and an A2D ) , then the next time I called Ayre, I would advocate for a transformer replacement...
and why hijack a perfectly good thread on the twenty upgrade...
now if I were the dealer and you brought it in, plugged it into my pole pig and it hummed more than normal ( and yes I have an Ayre DAC and an A2D ) , then the next time I called Ayre, I would advocate for a transformer replacement...