Got to spend a an hour or so testing today.
My opinion is the Streamliner is awesome but not a one size fits all amp. It does some things perfectly! That Ampeg growl with very slight to moderate break up is awesome. But I have been blaming my new to me GB cabinet for some of the lack of clarity. The one at home is mint but the one I'm close to has a slight grill rattle, non working tweeter, and another funky rattle. I had thought that this cabinet might be contributing to some of the "harmonic richness".
Turns out the STR 600 is not able to be a super clean, channel strip style amp. Just so happens that a Berg HT322, SWR 600, and Ashdown ABM 500 were all at this house and these can be adjusted to be surgically clear and clean (ABM 500 pre-amp tube off). I don't find that the STR does super clean well. OTOH the SWR (and ABM to a lesser degree) give the funk of the STR. Will be good to try with a band tomorrow. Pictures or it didn't happen.
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