fwiw, I recently ran a schoeps VMS box in front of an UA5. I did XLR in for the opener, and ended up running the gain knobs on the UA5 at zero, and brickwalled. You really couldn't tell if you listened to the recording (or at least I couldnt) but you could definitely tell if you looked at the waveform. I ran RCA in for the headliner, and had no problems. The only other problem I can see you having is if the 148 doesn't have variable gain on each channel and you're caps are significantly different, you'll have to adjust the levels in post. The schoeps I ran were about 2 db off, so it wasn't too bad. Cheers