The Fostex RPmk3 series headphones are successors to the reputed RPmk2 series that have been used as reliable monitor headphones in many professional recording studios for more than 30 years. The driver unit incorporating the key Fostex proprietary Regular Phase (RP) Technology diaphragm has been refined to achieve sharper audio reproduction for more accurate monitoring. The housing, ear pads and head pad have also been redesigned to derive the maximum performance of the RP driver. Founded in 1973, Fostex is an acclaimed manufacturer of location sound, multi track recording, and speaker products.