Just as an update on the effects loop...I recently brought it to a local shop and got it back yesterday. Since it was there, I had them put in new pre-amp tubes (mesa's). They said the pot for send level was indeed shot, so they replaced that and set it for unity, with a patch cable in the loop, which I thought was pretty cool! I got it home, hooked it up...and everything is working perfect and sounds better than ever (which I didn't think was possible).
Another Mesa Lover. Loved my Mark I (non-reissue) w/K120. Play my TA-15 more than my rack rig. Even though they have the reputation of being the "Death Metal" amp company, Mesa cleans are stellar. They're in the Jerry/Bobby lineage. Equipment is domestically produced. Quality is exceptional.
Last night I had Jerry/Merl pumping "Georgia on my Mind" pumping from a McIntosh (oldschool) stereo system. I was playing off it with the Transatlantic/JBL K120 configuation at the 6 watt setting with a schmattering of Earth Drive, and a bit of nice pedal reverb (EHX). I'm talking big fun here. Guitar medition in G Dorian trading leads w/ Merl and the G. Man.
OK. I've got to work now. My guitar crap is taking over my business ethics.