Just picked up a Bergantino NV215 and NV610 and am running an Eden Nav and QSC PLX3002 (900w per side 4 ohms). Sounds fine and loud. But I feel that there is something missing as it's a little polite. Maybe it's the combo of the Eden and NV cabs. I've tried a few tube heads at the local GC but never had the pleasure of trying the SVTII non-pro or Mesa 400/400+. Are there any other pre's I may want to consider to warm up the tone that goes well with the NV's? I am open to both tube and ss as I can dig both for what they bring.