I am trying to make my mind up wether to get a preamp and a poweramp (Ampeg SVP-BSP, and a QsC mx-1500a) or a single unit like the Carvin R600, or the Ampeg B2R. I also do a noise/soundscape set so the amp would have to double for that (I do use the bass, but it is heavaly prossesed). I know you can achive greater tonal posability's with a pre - power setup, but mucho $$$. Alex ps. I saw someone on here using a tech 21 sans amp, as thier preamp, and a Stewart 2.1(I think) as a power amp!.. would that sound good, and can you still get the rackmount sans amp from tech 21????