Is it the S or the regular model? Also what does it mean that the noise reduction is switchable between 2 groups of 4 tracks? Does this mean that noise reduction can not be applied to all 8 tracks at the same time when mixing all 8 tracks to your two track master? I am interested. I could send you a PM with my cell phone number. I would also need a mixer with in and out ports for 8 tracks correct? DB