I'm very surprised you can't detect the difference between the headphone o/p of the RPi vs IQAudio DAC...there really is no comparison! Something is seriously amiss....
I'm currently running Moode so the menus are slightly different vs Volumio but the setting for resampling should be under the MPD or Audio menu. You can also set the DAC volume control to software, hardware or disabled, mine is disabled as I use an external passive pre. Avoid software as it will reduce bit depth/
The alasmixer settings where covered earlier in the thread but you may never find them as it has got quite big! However, the manual is here: http://www.iqaudio.com/downloads/IQaudIO.pdf
See P19...from the manual:
• “PCM” or “Playback Digital” is the master volume control 0..100%
• “Playback” sets the maximum output to be 1vrms (0% = +0db) OR 2vrms (100% = +6db gain)
• “Playback Boost” gives an additional gain of 0.8db and should similarly be set to 100%
Setting PCM to 86% is effectively 0db IE: no volume boost or cut
Playback is a toggle; either the DAC outputs 1v RMS or 2v RMS. Industry standard is 2v RMS
Playback Boost gives additional volume.
You may find the volume is lower than expected in use so either set the PCM control higher or just disable volume control completely ( sets to 100%) and use a pre-amp instead.


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just using it as it is or came to me. there is a vol control on volumio which i set at 97 normally..seems to be ok for me but next time Gary is over i will pick his brain
Originally Posted by NRG



