mryback@xxxxxxxxxxx wrote: > However jack would not allow me to create a four channel device > [Attached file: alsa-jack-start.text]. The fist log is where I attempted > to create a 4 channel alsa device (which fails), the second a two channel > device (always succeeds) hw:1 is the same as hw:1,0. To use the virtual device, call jack with -dusb-audio. And I'm not sure if the device supports 4 channels when using playback and capture at the same time. HTH Clemens