For as impressive as BoomSound is on the HTC One — nothing comes close to those front-facing speakers yet — the phone is still a bit lacking on the low end. Physics are funny like that, of course. And, so, we have the HTC BoomBass.
As the name implies, this little square speaker adds bass to your BoomSound experience in a simple and stylish package. But it's not a full-blown Bluetooth speaker. Rather, BoomBass adds some low-end — and only low end — to your HTC One experience, working in (ahem) concert with those front-facing speakers.