I've had my ER4's for eight years now. They're the only headphone I've heard that sounds almost exactly like my beloved NHT 2.5i speakers. After listening to

I've had my ER4's for eight years now. They're the only headphone I've heard that sounds almost exactly like my beloved NHT 2.5i speakers. After listening to the Etymotics, virtually all other headphones sound wildly inaccurate, and the ones which claim to have great bass response just sound muddy and distorted.