Reply To: Pi 3b+, USB music collection, Bluetooth speaker & control by iPhone

USB Current: yes, that’s the setting I meant.. but I guess I was wrong, as I wrongly understood you had issues with a USB harddrive, but a Stick shouldn’t be an issue at all.

But honestly, as you might begin to realize, Max2Play isn’t supported/maintained anymore very well.
If you only need Music rather than HDMI/AV Output and stuff like KODI from your Raspi, I strongly recommend you go for PiCorePlayer instead. They have a lively community and very good support, and a working update maitenance.
https://www.picoreplayer.org/

It also runs on a smaller OS version designed vor small hardware, so that will require less power as well. And switch off HDMI should also save some energy.