boonboon Posted November 8, 2019 Share Posted November 8, 2019 When I use Fiio M6 with FiiO F9SE headphone with Poweramp Ver. 852 Headphone sound is crack when I use HiRes Output (Volume 35-40) but when I switch to OpenGL ES output headphone sound is no crack but I have to volume up to 70-80 (With same Headphone when I use with my Xiaomi Mi A2 sound is very good with Poweramp Ver. 852) I'm sorry that I don't know this issue is hardware bug or software bug? Link to comment Share on other sites More sharing options...
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