Resurrecting this to ask about resampling. I have used Poweramp for years, on my last 2 phones, and my current phone is Galaxy S9.
Anyway, i just looked at the Audio Info report for the first time (never noticed it before) and was surprised to see that it is upsampling my 44.1kHz files to 48kHz. I found the Resampler setting in the Poweramp menus but there's no option to disable it -- it's just a choice between SW or SoX resamplers. Is there any way to stop this? What am I doing wrong? 99.9% of the files on my phone are 16 / 44.1 (wma losseless and flac, but some mp3 too).