Amazon.com : https://www.amazon.com/gp/product/B0007WZLDC?tag=eatingwelldia-20

Etymotic Research ER4P MicroPro NoiseIsolating InEar Earphones Discontinued by

Product Description :
Highest noise-isolating earphones on the market
Reduction of outside noise reduces the risk of listening at unsafe levels
Designed for audiophiles musicians and sound engineers
Assortment of ACCU-Fit eartips included to ensure proper seal and comfort and 14 inch stereo adapter