Fantastic deal on Amazon. Etymōtic has the ER4SR on sale. $181.10 that is a $118.89 cent discount. I’ll have my set tomorrow. It will be interesting to listen to these with it’s balanced cable. I prefer the Studio Edition/Reference versions.
Etymotic Research ER4SR Studio Reference Precision Matched In-Ear Earphones (Detachable Balanced Armature Drivers, Noise Isolating, High Fidelity, World Leader Response Accuracy) Amazon.com: Etymotic Research ER4SR Studio Reference Precision Matched In-Ear Earphones (Detachable Balanced Armature Drivers, Noise Isolating, High Fidelity, World Leader Response Accuracy): Electronics