Update...got the head and cabinet back from the tech last week...repair tag pics are attached, maybe some of you more technical minded folks can sort out what may have happened.
Not sure what my path forward is for this..It is a nice sounding head and cabinet combination, but the DI is still noisy despite the techs claims (and storeowners claims) it was "normal" noise. There was a very noticeable hum coming from the DI when plugged into an amp (california blonde) in the store and at my house. In contrast, the DI out on both my Demeter Bass 400 and Mesa D800+ were much quieter. No idea if this was the noise that various sound guys had complained about before (I never thought to go listen to see what they were hearing unfortunately).
Not sure if Im going to try and sell this privately, trade it in, or keep it for use as a beater rig.

