I've had these for about a year, but it never got as much head time as I'd like having the HD800 and HEX as well. I'd estimate 100-150 hours. I've decided to trim myself down to just one TOTL headphone in the HEX, so I'm selling these. Took very good care of it and no scratches or blemishes of any kind. No hinge issues. First owner. Paypal only. If you pay with PayPal gift, I will pay for shipping with insurance, otherwise you provide shipping ($25).