Hello, Maybe I just not a master googler, but I didnt find any answer why qjackctl limits maximum of input or output channels to 32. Also PD has this limit compiled in and so on, but jackd starts with 64 channels with my MADI-card ? Is there a technical reason or can I just remove the limits in the code ? Its not so bad becaused I always used alsa-only before, but I just want give jack a try. BTW, I also would suggest that if a limit is needed, it should be 256 channels (4 MADI-Cards) I thinks its the maximum you can do nowaday with linux, but if there is the rule of computer speed, so I can think, this count will double each 2 years, so to be save for next 4 years we need 1024 channels limit. mfg winfried -- -- - Winfried Ritsch - ritsch(a)iem.at - http://iem.at/ritsch - Institut fuer Elektronische Musik und Akustik - University of Music and Dramatic Art Graz - Tel. ++43-316-389-3510 (3170) Fax ++43-316-389-3171 - PGP-ID 69617A69 (see keyserver http://wwwkeys.at.gpg.net/) --