look up any word, like wyd:
 
1.
The best damn headphones in the world. Smooth, neutral, and very musical, and with 40dB of isolation to boot!
Upon inserting the ER4S into his ears, PiccoloNamek had an intense eargasm.
by PiccoloNamek August 18, 2006

Words related to ER4S

er4 er-4s ety etymotic headphone