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I know this subject has been brought up before, and some people seem to like the Sennheisers and others don't. I have Sony MDR CD-580 headphones, but they shipped with a bad cord. This detachable cord has a proprietary adaptor, I think, as I haven't been able to find any type of adapter to use a regular audio cable with these headphones. I was able, until recently to push the cable hard enough to reseat the wire, but this doesn't work anymore, and the warranty is expired. The bad connection is inside the adaptor. I didn't know these headphones were shipped with a bad cord, until I checked the internet. I always thought I had done something. Mad at Sony, I bought a 30 dollar pair of Coby CV-670s. Although comfortable, when I get to the second to last C on the upper register of a Yamaha CVP-107, these things blast my ears with a sudden change in volume. It is only this note and a few others. On the highest notes, he headphones don't do this. Then I went back, considered the Sennheisers, but almost every pair out of about a dozen had been returned. Instead, I got another pair of Sonys, but one with a different cord. I bought the Sony V6 headphones, which is often recommended on the internet. But this has the same problem as the Cobys, just not as pronounced. When I reach those few notes,on the Yamaha Clavinova CVP-107, there is an annoying sudden blast of volume, although not to the same extent as the Cobys. I don't know why this happens exactly, but I read somewhere about the Sony V6 headphones being overamped on the high and low end. But why only for a few notes? Is it a sampling problem on the Clavinovas? The very highest notes don't do this. I don't understand
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