I was at Mars today buying some strings, and I couldnt help but look at the Ampeg Stuff. I saw the Svt-3 and Svt-2 Pro heads, I played them both and they both sounded very good with minimal tonal differences to me. The svt-3pro is 450 watts @ 4 ohm, and the svt-2 pro is only 300 watts. Other than the power ratings is there any major differences in the 2 heads? Which is technically the better head? I know thats pretty speculative but I plan on going back tomorrow with my bass and giving them both a good workout and bringing one of them home.the svt-2 pro also has 5 12a x7a tubes compared to the 3 in the svt-3 pro, does this affect the sound all that much, cos i didnt really hear much of a difference. and the svt-2 also has. the svt-2 pro also has one more power tube than the other one, not sure if this really makes a big difference either.