Since this has been mentioned, my US-122 doesn't work AT ALL using usx2y, but is fine with alsa. I am using qjackctl 0.2.13 and Jack 0.99.0 (the most recent versions AFAIK). All I get is: 17:47:12.866 JACK is starting... 17:47:12.867 /usr/bin/jackstart -R -dusx2y -dhw:1 -r44100 -p512 -n3 -H -M 17:47:12.873 JACK was started with PID=6369 (0x18e1). back from read, ret = 1 errno == Success jackd: unknown driver 'usx2y' 17:47:12.885 JACK was stopped with exit status=1. 17:47:14.885 Could not connect to JACK server as client. This doesn't bother me, unless there are meant to be advantages of using usx2y? Stefan Turner ___________________________________________________________ Win a castle for NYE with your mates and Yahoo! Messenger http://uk.messenger.yahoo.com