I replaced it with my dad's phoenix gold RCAs for a couple IASCA shows
and the problem was fixed. I settled with a monster cable interlink of
some sort, about a 35$ cable. Possible I got a bad cable from RS, but I
took it apart and re-flow'd the solder joints to no avail. Ive been
using it in my guitar rack for years and it sounds great with my high
gain tube rack pictured on right...

http://images.cardomain.com/member_i...68_59_full.jpg

I cant figure it out, but I'm glad I found a solution... :~)

If your amplifier was a source of noise outside the chassis, how come it's
not doing anything to the signal inside the chassis?