Thanks Soundhound for coming over to visit and take S/N measurements on my 950.

I wrote down some of his measurements. With the volume set to 0, trim to 0, with the analog DSP mode set to straight stereo, Soundhound measured the left front channel on my 950 as:

Full bandwidth, referencing .775v: -67db
With a 20kHz bandwidth limited filter in-line with the voltmeter: -77 db

I am no expert on what he measured. I'll defer to Soundhound on any specifics of his measurements on my 950.

Despite the audible hiss, my 950 sounds fine from my normally listening position. The audible hiss in mine is not as loud as in Soundhound's system, probably because my speakers are not as efficient as his horn speakers are.