:~$ sox --temp /tmp --guard --buffer 18432 -D -q -c2 -r3200 -t alsa hw:0:/Line -t pulseaudio default gain 4
ALSA lib pcm_hw.c:1713:(_snd_pcm_hw_open) Invalid value for card
sox FAIL formats: can't open input `hw:0:/Line': snd_pcm_open error: No such device