Its great but I have some suggestions...

This app changed my way of listening to music quite a bit. It may add some echo to music but surprisingly it doesnt effect it negatively.

Sug. 1: Ok. That circular music player thing needs to be changed or maybe we could have an option to change it to a basic line with the album artwork showing or if not maybe a visualizer if we want to take out the album art.

Sug. 2: Could you possibly try to add a way to control our music from outside the app (I.e. Change track time, possible Notification Center widget, etc.) to make everything more accessible or something.

Overall verdict: 9/10.

This app is extremely well made but definitely could use some tweaks here and there.

~Suki

ThatAkwardBrony about Boom: Bass Booster & Equalizer, v1.2.1