JVC Hi-Res corresponding headphone WOOD01 HA-SW01 Model: dynamic / Driver unit: diameter 40mm, Wood dome unit Play frequency band: 8Hz ~ 45,000Hz / output sound pressure level: 105dB / 1mW / impedance: 56 / maximum permissible input: 1,500mW / Cable: 1.2m (out both) OFC / input plug: 3.5mm 24 gold-plated stereo mini plug Mass (without cable): about 330g Accessories detachable cable, carrying case Japanese manual URL (PDF):http://www33.jvckenwood.com/pdfs/B5A-1077-01.pdf