% cat /dev/sndstat
Installed devices:
pcm0: <Intel Haswell (HDMI/DP 8ch)> (play)
pcm1: <Realtek (0x0668) (Analog 2.0+HP/2.0)> (play/rec) default
pcm2: <Realtek (0x0668) (Left Analog Mic)> (rec)

% sysctl dev.hdaa.1.nid21
dev.hdaa.1.nid21: pin: Headphones (Black Jack)
     Widget cap: 0x0040058d PWR UNSOL STEREO
    Association: 0 (0x8000)
        Pin cap: 0x0001001c PDC HP OUT EAPD
     Pin config: 0x0321101f as=1 seq=15 device=Headphones conn=Jack ctype=1/8 loc=Left color=Black misc=0
    Pin control: 0x000000c0 HP OUT
           EAPD: 0x00000002 EAPD
     Output amp: 0x80000000 mute=1 step=0 size=0 offset=0 (0/0dB)
    Connections: 3
          + <- nid=12 [audio mixer] (selected)
          + [DISABLED] <- nid=13 [audio mixer] [DISABLED]
          + [DISABLED] <- nid=14 [audio mixer] [DISABLED]

% sysctl dev.hdaa.1.nid12
dev.hdaa.1.nid12: audio mixer
     Widget cap: 0x0020010b STEREO
    Association: 0 (0x8001)
            OSS: pcm, mix
      Input amp: 0x80000000 mute=1 step=0 size=0 offset=0 (0/0dB)
    Connections: 2
          + <- nid=2 [audio output]
          + <- nid=11 [audio mixer]

% sysctl dev.hdaa.1.nid2
dev.hdaa.1.nid2: audio output
     Widget cap: 0x0000041d PWR STEREO
    Association: 0 (0x8001)
            OSS: pcm (pcm)
     Stream cap: 0x00000001 PCM
        PCM cap: 0x000e0560 16 20 24 bits, 44 48 96 192 KHz
     Output amp: 0x00025757 mute=0 step=87 size=2 offset=87 (-65/0dB)

% sysctl dev.hdaa.1.nid11
dev.hdaa.1.nid11: audio mixer
     Widget cap: 0x0020010b STEREO
    Association: 2 (0x0001)
            OSS: mix (mix)
      Input amp: 0x80051f17 mute=1 step=31 size=5 offset=23 (-34/12dB)
    Connections: 6
          + [DISABLED] <- nid=24 [pin: Speaker (None)] [DISABLED]
          + [DISABLED] <- nid=25 [pin: Speaker (None)] [DISABLED]
          + [DISABLED] <- nid=26 [pin: Speaker (None)] [DISABLED]
          + <- nid=27 [pin: Mic (Black Jack)]
          + <- nid=29 [beep widget]
          + [DISABLED] <- nid=20 [pin: Speaker (Fixed)]

% sysctl dev.hdaa.1.nid27
dev.hdaa.1.nid27: pin: Mic (Black Jack)
     Widget cap: 0x0040048b PWR UNSOL STEREO
    Association: 2 (0x0001)
            OSS: mic (mic)
        Pin cap: 0x00003724 PDC IN VREF[ 50 80 100 GROUND HIZ ]
     Pin config: 0x03a11040 as=4 seq=0 device=Mic conn=Jack ctype=1/8 loc=Left color=Black misc=0
    Pin control: 0x00000025 IN VREFs
      Input amp: 0x00270300 mute=0 step=3 size=39 offset=0 (0/30dB)

% sysctl dev.hdaa.1.nid29
dev.hdaa.1.nid29: beep widget
     Widget cap: 0x00700400 PWR
    Association: -2 (0x0000)
            OSS: speaker (speaker)
        Pin cap: 0x00000020 IN
     Pin config: 0x40d6832d as=2 seq=13 device=Digital-in conn=None ctype=Digital loc=0x00 color=Purple misc=3
    Pin control: 0x00000020 IN