I checked the option in Logic hardware setup "use 16 or more inputs" In the mix window, only inputs from 1 to 10 appears I havn't any device such as ADAT, but I have some SPDIF stuffs, and trying the input 9 and 10 didn't work. I seems that the SPDIF are in fact the inputs 17 and 18. How to be able to see them ? And what are the 9 and 10 for ? Thanks for your answer Logic Gold Mac 4.1.3, 60 megs allocated, G3 desktop 233, digi001 Laurent Levesque