I just picked up a USA svt4p. I didn't get alot of time to play it as all my gear is in a trailer and I had a gig sat. So, I ran it onto 2 svt 810e cabs on stereo obviously. I have to say, it just didn't seem to be very loud. I have read about bass sucking power, I was mindful of that but it really sounded weak unless I used the ultra bass. I had the gain nearly maxed and the master at noon to get a decent level. Mind you, I play on a loud band with a very hard hitting drummer and no, theyre not gna turn down lol. I don't even bother with monitors since they usually screw it up. So, I like a good drive and a nice thick tone, I play a variety of basses but it was IMO, weak. I just came from using 2 GK 800rb and they sounded better at 300w each. My first thought is the preamp tubes. Maybe a new set with something more suited to overdrive? I need this thing loud and powerful and not sure how to proceed. Appreciate any input.