Review on 🎧 SENNHEISER HD 820: Ultimate Audiophile Reference Headphones with Ring Radiator Drivers and Glass Reflector Technology - Sound Isolation, Closed Earcups, Balanced Cable, 2-Year Warranty (Black) by Deanna Martinez

Sennheiser 820 is a great product! But you don't want to pay a new price for a used product. The item sent to me has been unpacked. The cables have not been configured as a new block. The extra set of cables was not in the product box, it was just thrown in the shipping box. In the box with the headphones was a coupon for a free set of balanced cables. After checking with Sennheiser who didn't accept the voucher even though it was issued by them. The problem was that the promotion ended over two years ago! With all of these variations, you can see why I wouldn't rule this out as a new product. There is nothing wrong with the 820 headphones, they have been distorted!