Spatial Audio Upmixer
Incredibly lightweight yet effective sound fx that combines techniques of iir, fir, compressor, limiters with loudness normalization along with main component - spatialization based on source separation and binaural upmixing.
Engine supports both wired headphones & speakers, don't see why it wouldn't work on bt, but I haven't tested that. It's also one of those very rare cases when android fx seem to support up to 192khz sampling, testing on 24/192 flac proved working like a charm.
As far as I understand there is some sort of EQ that tunes itself on-the-go eliminating clipping, but I couldn't patch anything in it.
Can't be used with JDSP!
If using with other ainur mods/addons - need to (re)flash AML (audio modification library) from the repo to hook it up