so i was all set to get rid of my 8x10 for a new 2 cab setup, because i wasn't getting the sound, or lowend that i wanted from my svp, qsc, 8x10. well...the other night i decided to a/b my svp against my bddi. i know the bddi can't drive a power amp to full power, but it was just to compare tone. keep in mind...this was in my living room at home, using my passive mia j bass (natural/maple). so...the bddi first. right off the bat, the first thing i thought was, "this is what i've been looking for". i haven't used it in so long, and forgot how great it was. i used the recommended settings, then messed around with it. i got so many sounds from it, and really loved it alot. now...the svp. i didn't like it how it was set. just didn't have the bottom i wanted. so i went through the suggested settings, and that helped fatten things up a bit. then i messed with it alittle, and it sounded pretty good. the thing i'm worried about with it, is that a while ago, it sounded great at home, but then live i could not get the sound i wanted. it kept distorting. i couldn't get it cleaned up at all. it probably should get some new tubes though. i think that's definately in order. i have practice on friday and saturday, and i'm going to try them both again at much higher volumes and see what happens. now, my question is this. is this a fair comparison. i know it would be alittle more fair if the svp had newer tubes in it, but would it make THAT MUCH of a difference for comparison? also, would it be safe to say that if after practicing, if i end up liking the bddi much better, that i should just get the rbi? and will the rbi run my power amp (rmx 850, soon upgrading) to full power? let me know. thanks.