Woojer

Headphones and earphones won’t ever replicate the spine-chilling bass of a live concert setup, but with Woojer you’re not far off. This matchbox-sized woofer clips to your clothing and sits between your headphones and your device, reproducing bass frequencies in form of vibrations that lets you feel the sound. It works great with music, games, and movies, runs for 4 hours on a charge, and is drop-dead silent, letting you enjoy seemingly loud music virtually anywhere without bothering those around you.

Read more at Woojer or Amazon – $100 to $180