```
pcm0: <Dummy Audio Device> on nexus0 (1p:1v/1r:1v) default
snddev flags=0x2e6<AUTOVCHAN,SOFTPCMVOL,BUSY,MPSAFE,REGISTERED,VPC>
[dsp0.play.0]: spd 48000, fmt 0x00200010, flags 0x00002100, 0x00000004
interrupts 0, underruns 0, feed 0, ready 0 [b:2048/1024/2|bs:2048/1024/2]
channel flags=0x2100<BUSY,HAS_VCHAN>
{userland} -> feeder_mixer(0x00200010) -> {hardware}
dsp0.play.0[dsp0.virtual_play.0]: spd 8000, fmt 0x00100008, flags 0x10000000, 0x00000000
interrupts 0, underruns 0, feed 0, ready 0 [b:0/0/0|bs:0/0/0]
channel flags=0x10000000<VIRTUAL>
{userland} -> feeder_root(0x00000000) -> {dsp0.play.0}
[dsp0.record.0]: spd 48000, fmt 0x00200010, flags 0x00002100, 0x00000005
interrupts 0, overruns 0, feed 0, hfree 2048, sfree 2048 [b:2048/1024/2|bs:2048/1024/2]
channel flags=0x2100<BUSY,HAS_VCHAN>
{hardware} -> feeder_root(0x00200010) -> feeder_mixer(0x00200010) -> {userland}
dsp0.record.0[dsp0.virtual_record.0]: spd 8000, fmt 0x00100008, flags 0x10000000, 0x00000000
interrupts 0, overruns 0, feed 0, hfree 0, sfree 0 [b:0/0/0|bs:0/0/0]
channel flags=0x10000000<VIRTUAL>
{dsp0.record.0} -> feeder_root(0x00000000) -> {userland}
No devices installed from userspace.
```