I'm trying to do a screen recording with quicktime in High Sierra, using loopback from Output 1/2 on the FF400 Totalmix. It works, but it sounds like it's recording in Mono, or at least a very poor quality stereo image. I have the Quicktime input set to "Fireface 400 (FE1)", which is the only option Quicktime gives. Does anyone know how to get a better stereo screen recording?

Thanks