ER•4 MicroPro™ Earphones - Next Best Thing to Live Music

The ER•4 MicroPro™ earphones are the next best thing to live music, with noise isolation far surpassing that of active noise-canceling earphones. The ER•4s require NO batteries, and can be plugged into any audio source. Their external noise exclusion -- 35 dB with 3-flange eartips, 42 dB with foam eartips -- allows you to hear the full dynamic range of recordings without having to play them at unnaturally high and unsafe levels. The earphones come in three styles: ER•4B, ER•4S, ER•4P.

• Transparent, reference-quality sound
• For audiophiles, performing musicians and recording engineers
• For mixing, monitoring and critical listening
• Accurate real-ear response
• Unsurpassed isolation from outside sound

System Includes
• ER•4 MicroPro earphones
• 5 ft. cord with 3.5 mm stereo phone plug
• 1/4" stereo phone adapter plug
• Six 3-flange eartips
• 10 foam eartips
• Filter changing tool
• 4 replacement filters
• Shirt clip
• Pouch (not shown)
• Storage box