Synchro Belt Drive Posted August 1, 2011 Report Posted August 1, 2011 Sorry, memory blip. Open headphone if I am correct although I would almost call it semi-open since the leakage is not as much as with my old HD42X-series (from the seventies).
rhythmdevils Posted August 2, 2011 Report Posted August 2, 2011 I'd say the K400 and the series that followed up to the Qfail are some of the most open dynamics around.
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