I do and very happy. It is survived from the 70s and it still sound great. It is a Nakamichi 550 one of the first top class portable on the market.
Don't get me wrong: I like this headphone, I own it and used with a lot of satisfaction from two years now then I look for an alternative.
I know this post could not be very popular expecially here on Whathifi forum, they always goes 5 stars for any single Q Acoustics product they review, and this was originally also the reason becous