amp transformer hum through speakers ?

Hi Mike,
if this is giving you problems, try a set of HT cberlinks between pre & power/s.Cured all sorts of problems I was having, probably due to breaking the grounds between the components. Mail me direct if you want to discuss more.
Simon

Hi there,
I should have qualified my reply by saying - if all else fails !
Had lots of problems with grounding loops trying to improve? my house earthing. An extra earth spike connected to the system was great with one amp & caused an obvious and immediate loop with another - I had to revert to the 'house' earth with my Pass.
I found a fabulous link on the threads to a great post on hum tracking - I hope the author does not take umbrage - it was so in depth I posted it on my website - can't remeber where to find the original so with thanks & apologies to the author :
http://damnhifi.mysite.wanadoo-members.co.uk/

Simon