Price Match Guarantee Audio Technica ATH-R30X Reference Open-Back Headphones Audio-Technica ATH-R30x Professional Open-Back Reference Headphones The ATH-R30x open-back reference headphones deliver sound directly from the drivers, with little additional tuning or damping. Allowed to move freely, the headphones' enhanced 40 mm drivers provide a natural, immersive listening experience. Product Highlights: Driver Diameter: 40 mm, delivering clear and balanced sound Frequency Response: 15 Hz - 25,000 Hz, for accurate and detailed audio reproduction Impedance: 36 ohms, suitable for use with a variety of devices Open-Back Design: for natural, immersive sound and unrestricted driver movement Our 30-day money back guarantee