There are a few outstanding examples of open back headphones, but not many as good as Sennheiser's old school HD 650.

The HD 650s have been around for over a decade and still sound formidable with rave reviews dating as back as 2008, when these things used to cost almost $600 (they go for about half that today).

There's a reason they're still popular today and audiophiles swear by them, as they are well made, comfortable and durable.

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