er4pt_user_manual.pdf

E R ? 4 P T U s e r M a n u a l 2ACCU?Driver? high performance, balanced armature drivers are percision matched for an accuracy response of 86% or better. Thank you for your purchase of ER?4 MicroPro? earphones, the world’s most accurate earphones. INTRODUCTION ER?4 MicroPro earphones were the first noise-isolating high-fidelity in-ear earphones to use ACCU?Driver? high performance, balanced armature drivers. These high-definition transducers combine flat frequency response with passive noise isolation. Noise reduction with ER?4 earphones occurs naturally when the eartips are sealed in the ear canals. Included with the earphones is the Channel-matching Compliance Graph showing frequency response curves of each custom-tuned, balanced armature driver. An assortment of ACCU?Fit? eartips is provided in this package. The triple- flange eartips reduce sound an average of 35 dB, which is approximately 98% noise reduction. The foam eartips provide slightly more (42 dB) sound reduction. Lowering outside sound allows you to hear the full dynamic range of the recording without having to play it at unsafe levels. The ER?4 MicroPro series earphones produce the highest sound quality of any high-definition earphones on the market today. We hope you enjoy them. Etymotic Research You know your music. Etymotic know your ears. 3 4ABOUT ETYMOTIC RESEARCHSYS E INCLUDES ? ER?4PT earphones ? 5 ft cord with 3.5 mm stereo plug ? 1?4 stereo phone adapter plug ? Assortment of ACCU?Fit? eartips ? Filter changing tool and replacement ACCU?Filter? wax filters ? Shirt clip ? Airline adapter ? Travel pouch ? Storage box ? Channel-matching compliance graph Accessories are available at . Storage Box 5PROPER CARE ? Do not expose the earphones to extreme temperatures. ? Avoid dropping and strong impact. ? Leave eartips on the earphones for shock protection. ? Do not pull on the cord to remove the earphone from the audio device or the ear. ? Clean or replace ACCU?Fit? eartips prior to use by others. ?