Beyerdynamic DT 770 PRO Studio Closed-Back Reference Headphones (Open Box) 4.4mm female The single-strand wire core is

The single-strand wire core is up to 130 cores

Headphone Structure In-ear Impedance 16 ohm Sensitivity (SPL 1mW 1KHz) 103 dB Frequency Response 20 Hz – 20 Khz Microphone / control Omni directional In-line mic with controls Compatibility Windows / Apple / Android Focal Sphear Earphones

8 Cores Silver Plated Copper

Current amplification has a naturally low impedance

Beyerdynamic DT 770 PRO Studio Closed-Back Reference Headphones (Open Box) 4.4mm female The single-strand wire core isDT 770 PRO Reference headphones for control and monitoring purposes (closed) Circumaural headphones for professional sound in the studio and on mobile devices Innovative bass reflex system High wearing comfort thanks to soft, circumaural, and replaceable ear pads Comfortable fit due to rugged, adjustable, soft padded headband construction Made in Germany 32 ohms comes standard with BLACK for leader earpads; 80 and 250 ohms comes standard with SILVER