This Earphone

JandR.com has the Grado SR60 Stereo Headphones for $69 with free shipping. Review.

Product description from JandR.com:

Vented diaphragm / Non Resonant air chamber / Standard copper voice coil wire / Standard copper connecting cord / mini plug with 1/4″ adaptor

The Grado SR60 Headphones have gained legendary status and RAVE reviews from hardcore audiopiles around the worl!
d. Its unique design concept is made of a low mass polymer, carefully formed to broaden resonant modes to reduce their amplitude. This delivers low frequency resonance and prevents breakup at lower frequencies, for a superior listening experience.

Vented diaphragm

Non Resonant air chamber

Standard copper voice coil wire

Standard copper connecting cord

Mini plug with 1/4″ adaptor

Request a copy of the manufacturer’s warranty, click here for details

Product link.