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I'd like to add that the Shuttlemax 9.2 beats both these amps because I'm not manly enough to play an Ampeg!![]()
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I'm way too dumb for all those knobs![]()
With the SL I ended up with bass at about 11 oclock, mids (600 KHz) at 2-3 oclock, and treble at about 10. (gain was at 11, pre-volume at 4). .
Proper gig report - comparison 900 Streamliner and 7Pro
Took both amps out last night to the wedding we were playing at. Not a huge room, but no FoH support for the bass, so actually got the amps and cab (GB 810-XB3) working a little bit.
First set - used the 7 Pro. Fiddled a lot with the EQ (mids really) to find a tone which slotted in the mix nicely without getting lost in just low bass. Kept fiddling, and tweaking during the first set. It was OK, can't really say much more. I honestly struggled having enough brightness without it sounding brittle. And also struggled at finding a mids setting which gave me the clarity and cut that I was looking for.
Second set, out comes the Streamliner. ... instant satisfaction. Despite my perceptions of the amp being a bit mid-shy. In the mix it instantly had more richness and mid-clarity. I have used the amp in a band before, but at very significantly less volume.
THis event was my first chance to really put it through it's paces.
Once things were cranked a little bit, I found myself tweaking the treble down and the bass up (certainly compared to settings I'd used before). I perceived no lack of clarity or tightness in the bass, despite perceiving this at low volumes with the SL (could, of course, been the cab more than the amp).
With the SL I ended up with bass at about 11 oclock, mids (600 KHz) at 2-3 oclock, and treble at about 10. (gain was at 11, pre-volume at 4).
With the Ampeg, I heard it's own tone, and actually felt that playing with the EQ yielded less flexible results than with the GB. A bit weird really, as it's almost the opposite of what I perceived at lower volume.
All I can think is that this is really more of a comment on both amp's responses with my cab. So for me, it's going to be the Streamliner all the way. THe Ampeg is clearly a great amp, which works incredibly for some people, but the SL just has some magic which, for me, makes me smile.

I use very similar settings on my STM-900 as hamfist and johnk10, cept that pre-volume knob. Interesting.
I see where some are trying the STM-900 with that pre-volume knob way up like that. I usually keep my gain knob @ 11:00, pre-vol @ 11:00-12:00 tops. Use the master volume more; though even that stays at 12:00-2:00 at most. This with a 4 ohm, TB153 or a GB Neox 212T.
I'll need to try setting that pre-volume up way more and will use less master for my volume to see what that does for me. I don't like a super-lota breakup so if that's what y'all are gaining; may not work for me. Still I'll try. And yeah, I'm fighting every day lately from ordering the Pro-7 to compare em myself.![]()