The bass is just right without being exaggerated and the treble is so spectacularly clear. I?ve always hated working out with earphone chords so this has made my life so much easier! My old headset had no problem doing that but the new Evo does not have that much loved ability. This backpack is poorly designed. Firm hold and easily adjustable: using on my stationary bike when riding zwift Width wise, I had no issues and I have very wide feet. Nothing terrible, but if I had not wrapped everything our items would have been wet. Looks the nuts on my bike and performs as expected. Beware of this junk. Easy to assemble