Folks, I've had some amp hum for a while now...and recently it's been annoying me, so I tried the amp in other rooms....hum still present...I have a cheaper older amp that does not hum, so thought it was a dodgy unit....however I recently took it back to hi-fi shop and they tested it as normal....and last night to the old boys house and no hum...Soooo that leaves my electricity supply...perhaps more DC sneeking in I dunno....so I am getting a loan from hi-fi shop a conditioner that allows AC, but kills DC dead....and I'm sure this will indeed resolve the issue...my problem is it's £500.....and therefore do I live with Hum You can't hear the hum when playing music...so if it will not get worse, the amp's life will not be reduced and it defo does not affect the sound qaulity, then I'd live with it... Thoughts