# Pimoroni pHAT DAC pin use **URL:** \ **Category:** Electronics\ **Created:** [February 22, 2016, 1:14pm UTC](https://forums.pimoroni.com/t/pimoroni-phat-dac-pin-use/1852 "2016-02-22T13:14:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Brendtos](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/brendtos/32/849_2.png) [@Brendtos](https://forums.pimoroni.com/u/Brendtos)\ **Post date:** [February 22, 2016, 1:14pm UTC](https://forums.pimoroni.com/t/pimoroni-phat-dac-pin-use/1852/1 "2016-02-22T13:14:26Z")
Hi, I’ve setup a Raspberry Pi B with Shairport to AirPlay music to my speakers. Works a treat, however the audio quality is poor and volume is low. I’m therefore looking to add external sound to fix both these issues. Also considering replacing the Pi B with a Pi Zero. Problem is I’m also using GPIO to turn my speakers on and off via a relay. I was wondering if the Pimoroni pHAT DAC used all the pins? If not, which ones are available for other use? Thanks for you help! Brendt ---
**Author:** ![gadgetoid](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/gadgetoid/32/13_2.png) [@gadgetoid](https://forums.pimoroni.com/u/gadgetoid)\ **Post date:** [February 22, 2016, 2:43pm UTC](https://forums.pimoroni.com/t/pimoroni-phat-dac-pin-use/1852/2 "2016-02-22T14:43:44Z")
It uses the pins detailed here: [http://pinout.xyz/pinout/phat\_dac](http://pinout.xyz/pinout/phat_dac) Plus 5v power, and ground of course. pHAT DAC supplies a line-level output, so it likely wont help for your low volume problems- that’s really down to the amplifier to solve. ---
**Author:** ![Brendtos](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/brendtos/32/849_2.png) [@Brendtos](https://forums.pimoroni.com/u/Brendtos)\ **Post date:** [February 22, 2016, 8:21pm UTC](https://forums.pimoroni.com/t/pimoroni-phat-dac-pin-use/1852/3 "2016-02-22T20:21:07Z")
Thanks! I’ve placed an order with an Australian supplier.