Yesterday I used the MM-4220 on a rehearsal with acousical instrument, sax, piano, double bass and drums. I used a pair of Sennheiser 212, dynamic mikes. Using the 48 dB amplification position, the inputs are clipping constantly, and the sax is distorted. Using the 24 dB position, the background noise becomes disturbing.
On a previous choire recording, I have managed to have the input work well with an external mic preamp from Line Audio , with a 40dB attenuation between the preamp and the mixer !!!!!!
It is as if the amplification levels are just taken out of the sleeve, rather than based on how most professional microphones works.
The inputs of this unit need reconstruction, not putting the head in the sand. I also hope that these problems will be solved in the unit Marenius is developing with Eric Spitzer Marlyn.
Peter