sennheiser is known for making top notch audio products and it seems they rose the bar a bit more this time around.
for more sophisticated headphone like my etymo 3's or these sennheisers, they only sound good with apple's i tunes at 256 bits.
i have heard that there are many knock-off sennheisers out there, but it seems that most of the amazon sellers are pretty reliable.
for background my headphone collection collection consists of full size sennheiser hd-580's, the wireless sennheiser rs-120's, sennheiser cx-300's canals, and now the cx-500's
when i discovered they were counterfeit, i contacted sennheiser to find out if amazon.com was an authorized seller (i was sure amazon would only deal with legitimate products, but after getting
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