quiet hiss in backround?

actually, no need to change the amps...if i put my ear to the rear tweeter, i get the same sound just faint. the description earlier in the thread is best, like putting your ear to a sea shell. i am beginning to think it is normal or some sort of power sound in my house. now i am just curious about how much different the 3250 would sound as 2 chan so i am going to switch them anyway. this could push me to let go of the big krell if i get the same punch from a smaller amp...

It's normal.

wish i was.

I have no white noise at all, are you running the loudspeaker cables over the power cables by accident? Otherwise start by disconnecting all devices and reconnecting them one by one

here is the response from krell (2 days later)...

Through Watts it doesn’t surprise me to hear some background hiss through the tweeter. It is normal unless it is excessive..

so i guess it is normal! thanks for all your thoughts.

i did switch my amps today not just for trouble shooting, i really wanted to hear how the 3250 sounded alone anyway. it really reinforced how much control the fpb600c has, most notably in the mid and low bass as well as presenting a ton of air between instruments. actually very disappointed in the sound of the smaller (which really is not small) amp. a $6000 amp should sound much better in my opinion. the flip side, the big amp is a stellar old amp (not that old)...