Soundcraft Ui16 by Gift_lift
My ui16 has a noise floor of -55 at full gain with or without phantom power. That's about 20 db more headroom than the spec sheet said, so I'm very happy with mine. My sn starts with 5030. I'm using it in my home studio, I run my synths, drum machines, and things through it for the fx. It sounds better than software. I can add about 30db of gain before I see the floor on the meter a bit under -80 db. If i had a lot of mics all at 30db boost and the output was being amplified, I think it could be a concern in a quiet venue. Ps if they can lower the noise floor with a firmware update..... That kind of gives me a chubby.