Hi David, (Jan 08 2013 23:03), David Henningsson wrote: > E g, if you want to use the headphone output only, > and keep other channels silent. I want to do this for daily use. I think it better that PulseAudio pushes stereo PCM samples to first 2ch of all available channels, then, the users control internal-mixer to forward them into preferrable output port. Regards Takashi Sakamoto o-takashi at sakamocchi.jp