I finally got my amp and cabs back from one of my friend's storage place, and so I'm very happy. But anyway, the band was getting ready to practice (it was a big day for us because both the guitarist and I finally had our *real* hardware), and I was hoping I could find a good sound quickly (which = uh oh) because it had been a while since I had played, and I also now have a new bass and slightly different tone preferences. I decided I'd use the tube preamp solo because that's the sound I'm craving. Well first of all, I set up my amp and bass tone knobs flat. The result: waaaaaaay too much bass/boom. (BTW, my bass is a BTB 406.) So then I start turning the bass knob on the amp down...until it's almost at 0. Much better...for now. Then I goose the mids, and voila, I have definition. I mess around with the treble until I like what I hear. But I still need to "fine" tune a lot, so I go to the graphic EQ. I boost the high mids (1.2k and little on the 600 Hz) and find that grind that I really like starting to show up. I then realize that the low mids, which I like too, are interfering too much. So I cut the 180 Hz just wee little tad and get more crisp/grind. But now the bass end is a little weak. Not a problem, I think, so I go back to the tone controls on the bass. I boost the bass knob, but it's not doing too much. I set the mid frequency to a little above the lowest setting and boost a tad. Very nice. But I still need just a little bit more, only in a different frequency range. So I go to the bass knob on the amp and most it up to about 3 or 4. Now I have a tone that I really like, and one that fits in with my band really well. Nothing like cutting through with a really ballsy, beefy, aggressive sound. But yeah, I got a nice sound (to my ears) out of this airplane cockpit of an amp, and hopefully I won't have to adjust it too much when changing venues. I'm very happy with this amp now, but still considering the 400+ because I could use those extra tubes, don't really need the SS preamp side (at least not right now...maybe later), and could use the leftover cash. Just thought I'd share this with you, even though you probably don't care.