So far so good
I bought a pair of EC4's from Frys Electronics a little less than 2 years ago. (I know this is for a review of SCL4s) About 20 months into their ownership, I started getting the shorting of the right earphone as explained in other reviews. More >>
Michael Aurzada

Great!
I owned a pair of E4's. But like a few other people one of the wires from the right earphone started to fray. It was within the two year warrantee so Shure sent me a brand new set of SCL4's! More >>
Mark in MD

These headphones are not of high build quality
Bought these earphones in June 2008, and have had them replaced 3 times already, under Shure's warranty. Same issue each time. More >>
R. Jones

Shure SCL-4
I've had the older EC-4's which is now the SCL-4 model as Shure consolidated their earphone models.

I was hesitant at first since I've never had noise isolation earphones before and it did take awhile before your ears get accustomed to something in them. More >>
M. Chan

sound great, but with problems
bought a pair of these 3 months ago online. sound awesome. within 2 weeks, the left earphone crapped out with crackling sound and decreased volume compared to the right. More >>
J. Macatol