The ER3SE Studio Edition provides a high level of sensitivity, making it a perfect match for the portable media players on the market today. The ER3SE offers audio professional grade sound reproduction at an affordable price.

The ER3XR Extended Response offers a modest bass boost, building on the sound quality of the ER3SE, while providing a slight bass boost for those listeners that prefer a stronger low end response.

Best-in-Class
No compromise, high-performance noise-isolating earphones that deliver best-in-class benefits and superior value, perfectly matched to the latest product innovations from most music players that support a 3.5-mm stereo phone plug.

Studio Grade Accuracy
Achieves highest output sensitivity in its class with 102 dB SPL sensitivity at 1 kHz at 0.1 mV.
High performance, precision matched, balanced armature drivers.

Noise Isolation
35 dB - 42 dB noise isolation.
Documented highest noise isolation of any earphones or headphones on the market today.