I have two monoblocks - Monarchy Audio SM70.
One is silent, the other hums. Is this likely to be curable (ideally DIY and for free)?
Anything to prod or things to tighten under the hood?
It hums with no cables attached and with the power cable from the silent SM70 it still hums.
Ideas and suggestions please.
And if you remember my pre-amp question: a passive pre-amp may have been a better choice than the EC4.5 as the volume goes from quiet to loud with a 1 degree turn of the power knob.