IQaudio DAC Pro

integrated HQ headphone amplifier (TI TPA6133A) No soldering required, direct power supply via the Raspberry Pi (no external power required) Compatible with all Raspberry PI (A + / B + / 2/3 / 3B + / 4)

IQaudio DAC Pro connects to the 40-pin GPIO header of Raspberry Pi 1 Model B+, Raspberry Pi 2, Raspberry Pi 3, or Raspberry Pi 4 with no need for soldering or external power.

DAC Pro exposes two 3-pin headers (P7/P9) used by the optional XLR board to provide differential/balanced output exposed by XLR sockets above Raspberry Pi’s USB/Ethernet ports.

P1: Analogue out (0-2V RMS). Carries GPIO27, MUTE signal (headphone detect), left and right audio, and left and right ground.

P6: Headphone socket signals. Pin 1: LEFT, pin 2: GROUND, pin 3: RIGHT, pin 4: GROUND, pin 5: DETECT

P7/9: Differential output (0-4V RMS). P7: LEFT, P9: RIGHT.

P10: Alternative 5V input, powering the Raspberry Pi in parallel.