And another to add in this off-topic thread: today got my cable box replaced, and solved a noisy mystery. My coax feeding the box was causing a very loud hum, which I assumed was caused by the cable company. But when I removed the rca cables from my 950 that were going into the amp, silence.

The cable tech was about as helpful. Said his system couldn't be the source of the buzz/hum.

Next up is the 990/7500 combo with balanced, will see how this fares with the cable company.