Just to make some tests I looped RME ADI-8 Pro input and output, connected to a RME HDSP9652 (set as master), and I made some measurements: http://michelespinolo.altervista.org/rme/meas-chain.pdf this is the looped set-up with hdspmixer (i.e. total mix) at default volume. Here the same is done: http://michelespinolo.altervista.org/rme/meas-chain-gain.pdf but some gain is given on input channel (no analog or digital clipping occured). The results in the latter case are a lot worse than first one, but I do not know why. My set-up use a Athlon XP 2500+ (Barton core) Asus A7N8X-X motherboard, Fedora Core 3 (PlanetCCRMA distro), ALSA 1.0.9a. Anyone has some idea why this occurs? Thank you very much! Michele
