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Old 01-17-2012, 05:12 PM
kepo kepo is offline
Junior Member
Join Date: Jan 2012
Posts: 6
Unhappy J3 - Bluetooth music playback is hurting my ears (literally)

I just recently received the Cowon J3 (16 GB) that I ordered through I installed the latest firmware (ver 2.26), then I tested it right away. Wired headphones work perfectly. Then I tried connecting the device to bluetooth headsets. I'm pleased to report the process is very easy and hassle-free. However, I noticed something is terribly wrong with the bluetooth sound quality. The sound breaks very badly, and there's continuous & loud buzzing and hissing noise, also occasional high pitched noise that literally hurt my ears. This happened in a very stable environment with no signal interference.

I have tested 2 bluetooth headsets (Plantronics Backbeat 903+, and Sony DR-BT21G), all of which work great on my Sony player. However, when connected to my Cowon J3, none of them can play the music without literally hurting my ears.

I have wrtitten to about this issue. Not sure how long they'll take to reply. In the meantime I'm just wondering if anyone ever got the same problem. Is there any setting or function I have missed perhaps?
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