It's through an Aiwa PDCP> Mapletree Ear+ Basic amp. It puts out more than enough power for the P models low impedence. This player has 3 different eq settings, one is called rock and if it were on a real eq, it'd look like ---__---.
With that on, I found the bass digging a well in the basement, and I didn't have a basement until then. It goes into the "omg how can these little things do that?" zone.
Without the "eq" button, the bass is part of the music and realistic, though somewhat distant like the rest of the range. It's just not the best thing for rock. With it, mid deficiency galore.
I'll keep it off.