Any ideas.. please read.. First off, i run an american standard jazz v through a Sansamp Bass Driver with all the 800RB eq flat - i run the Sansamp with a little bass boost, a minor treble cut and the drive almost off. I switched the inst. output to line because there wasn't enough volume for the gig i was playing.. i forgot to adjust my input volume on the 800RB. I've owned the 800RB for about 10 years, my workhorse, it has it's share of 50,000 note checkups, so.... The amp shut down at the very end of a 50 min set.... no go.. I waited 3 days, turned it back on and got sound! but then i realized no matter what cables, cabs, or bass i use i am getting a very audible hiss, kinda like a real loud fan. The fuse is fine, i'm a real dumba$$ for not adjusting the input volume on the 800RB, but obviously something is wrong... so.. 800RB owners... does this fix sound expensive?? just asking, i may have to look into other options..