Hyperlynx

Well... It's not ideal, but it'll do thanks. This does mean I can't get any autoeq at all, if switching between earbuds and phone speakers. Ideally, the auto settings should be applied only the first time the app sees the connection to the device, not each time a track is played

Sounds good. How do I cancel the automatic selection, though?

I've just got a new pair of wireless earbuds. I see that Poweramp has equaliser presets for them, so I thought I'd use that. The thing is, I use the preamp volume setting a lot, for fine volume control. The normal volume control of my phone is often too coarse for what I want. But now, if I alter the preamp volume a little, when the track finishes that gets discarded because Poweramp re-loads the presets for my earbuds (and that includes preamp). Is there a way to load up the presets for my earbuds just once, and NOT reapply them every time the track changes?