Hello, I play an NXT Upright, Piezos only. I've narrowed down my quest for a preamp to the Sansamp Para Driver or Q Strip. Anybody have any experience with either/both of these? Although here and there I'll be plugging my Rickenbacker into it, my pre amp decision is 99.9% focused on dialing in clean warm jazz tone for my NXT upright. FOH is less of a factor, as that may never happen. The one thing that stands out about the Q Strip is 2 mid range knobs, but I'm wondering how important is that anyway. The Para Driver seems more versatile overall. idk...