# pHat DAC setup on Raspian Buster

**URL:** <https://forums.pimoroni.com/t/phat-dac-setup-on-raspian-buster/16340>\
**Category:** Support\
**Created:** [February 20, 2021, 11:44am UTC](https://forums.pimoroni.com/t/phat-dac-setup-on-raspian-buster/16340 "2021-02-20T11:44:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mrcantrill](https://avatars.discourse-cdn.com/v4/letter/m/ec9cab/32.png) [@mrcantrill](https://forums.pimoroni.com/u/mrcantrill)\
**Post date:** [February 20, 2021, 11:44am UTC](https://forums.pimoroni.com/t/phat-dac-setup-on-raspian-buster/16340/1 "2021-02-20T11:44:22Z")

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Hi, I recently dug out an old but brand-new pHat DAC that’s been sitting around unused for a few years with the hope I could get it working. The setup guidelines are based on older versions of Rasbian and don’t seem to work with Buster.

Is there a guide somewhere for setting up this product in Buster please?

Many thanks,  
Mark

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<div class="post-metadata">

**Author:** ![mrcantrill](https://avatars.discourse-cdn.com/v4/letter/m/ec9cab/32.png) [@mrcantrill](https://forums.pimoroni.com/u/mrcantrill)\
**Post date:** [February 22, 2021, 6:47am UTC](https://forums.pimoroni.com/t/phat-dac-setup-on-raspian-buster/16340/2 "2021-02-22T06:47:22Z")

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I managed to fix it after finding and following the simple setup instructions for the Audio DAC Shim and (oops!) remembering to use the -o alsa option with omxplayer.

Weirdly though, omxplayer is failing to decode the mp3 compression. Sometimes it works and sounds great, other times it take a few seconds to start decoding and you get the most horrendous distortion. Sometimes the same mp3 file works, other times it fails. But that’s a different issue to the one I started with this post.  
Cheers  
Mark