# pi_hifiberry_amp

Deactivates the Pi's onboard analog audio and activates a HiFiBerry
amp/DAC overlay instead.

**Key vars:** `hifiberry_overlay`, `hifiberry_powers_pi`

`hifiberry_powers_pi` (default `false`) is for a Pi fed through the HiFiBerry board's
GPIO header. On a Pi 5 that sets `usb_max_current_enable=1`, or USB is capped at 600mA.