Koss ESP-9 electrostatic Headphones Specifications

Sidebar: Specifications

Description: AC- or signal-powered electrostatic. Impedance: 4 to 16 ohms. Max input signal: 12W continuous program.
Dimensions: Headset weight, 19 oz. Cord length: 5½.
Price: $150 (1973); no longer available (2016).
Manufacturer: Koss Corporation, 4129 N. Port Washington Road, Milwaukee, WI 53212. Tel: (800) 872-5677, (414) 964-5000. Web: www.koss.com.
Koss Corporation
4129 N. Port Washington Road
Milwaukee, WI 53212
(800) 872-5677
www.koss.com
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