I was expecting a call from Outlaw this week to help me sort out the hiss problem but have not been contacted yet. While waiting for their call, I think I discovered a third variation of the mysterious "hiss" that lies somewhere in-between the hiss and HISS (I'll call it the "hISs"). In order of loudness, my HiSsEs are:

hiss (very quiet, the one you have to tilt your ear just right just to hear) - occurs when the 770 and 950 are connected, turned on, but volume set at minimum -80db.

hISs (not really loud enough to complain about but present none the less) - occurs while the 770 is on but not connected to the 950.

HISS (annoyingly loud, distracting, and unacceptable) - occurs when the 770 and 950 are connected, powered up, and the volume set at any level that is -79db and above.

Although the problem could be in the amp, I'm back to thinking it’s the 950.

What ever the case may be, I am confident that the outlaws will do whatever necessary to "clear" things up for me.

Q. How hot have the 950s (770s) been running? I'm getting 110 easily (even while idle) and mine are sitting side by side in the open on a workbench.