I started out (This time) with a Trace preamp & Crown power. I heard so much about Ampegs (Owned a 70s B25), I was convinced that the SVT 2pro would do. NOPE! it was the most untogether amp I have ever played into. I had to trade it back to the same dealer, so I had to get the SVT 4pro. This had MUCH more power, but it started to tear up, so I traded it for Eden Pre/Power. I am very happy with Eden, but I still had a hunger for the SVT. I found one used (1971). It had some problems, so I got about $200. more into it. I just got it back, Man this thing is as powerful as my 1000 watt Eden, but tubes RULE. BTW, when I had the SVT 2, I called Ampeg and talked to a tech there. I asked him what Ampeg he used. He said he didn't use Ampeg amps himself. I would stay away from the Crate-Pegs. If you gotta buy new, get the Mesa 400+ if you insist on tubes. Otherwise get an Eden WT amp & put a Sansamp BDDI in front of it.