So lately it's become my go-to snare pre (SC-1mk500). They would probably also make a pretty good drum overhead preamp as they seem to be fast and clean (less colored - but still big sounding). - posted on Gearslutz.com
I just got an assembled X-12 pair in the mail today. Build quality is excellent. Not much time to mess around with them yet, but I did have a chance to check them out for a few minutes with an SM7B. The only other pres I have in the room at that moment are the pres on my Toft ATB. So I tried that first, and it sounded pretty good. Plugged in the X-12 to compare and HOLY S*** did it sound good. Huge and very detailed. I'm looking forward to putting some distorted gtr through it later tonight. I'm already thinking about picking up another pair, or maybe one of the X-72's. - posted on Gearslutz forum
The SC-1 to me sounded warmer, fuller and in general more musical than others. The guy who runs the lab was pretty blown away that 4 channels of that quality only cost $700 (plus build time) and was definitly interested in a prebuilt unit.
I've been meaning to let you know how much I appreciate your whole DIY thing. It's a great service to all the DIY audio freaks out there and the PSU's rock. Very nice attention to detail also, which means a lot to me. I'm a furniture maker by trade, so elegance in design is something I notice.