Headphone AmplifierPHA-3AC

Connecting to an AC outlet

To use the headphone amplifier, connect it to an AC outlet beforehand.

  1. Connect the DC IN 5V port of the headphone amplifier and the USB AC adaptor (supplied) using the micro-USB cable (supplied), then connect the USB AC adaptor to an AC outlet.


  • There are two types of USB AC adaptors supplied. Use the one that is suitable for your AC outlet.