michaelwjones Posted May 26, 2022 Share Posted May 26, 2022 The Massdrop x Koss ESP/95X Electrostatic Stereo Headphone System is a custom version of the classic Koss ESP/950 released by Koss in 1990. Initially designed for live recording, the ESP/950 came with a large carrying case and a battery pack to power the required energizer: a special amplifier for electrostatic drivers. Made for the modern audiophile’s listening purposes, this version skips the case and battery pack to save on weight, space, and cost. The color has been updated to Massdrop’s exclusive midnight blue and the pleather ear pads swapped for thicker, more comfortable foam wrapped in velour. The rest stays true to the original: same clean bass and unmatched sound quality; same pivoting cups and adjustable, detachable headband; and same energizer. Because there is no physical contact or interference from coils or stiff cones—and because the film is so thin—electrostatic headphones produce a superior sound, characterized by a lack of coloration and distortion. But they require a high-voltage power supply and are generally more expensive. Box contains headphones, extension cable, AC adapter and electrostatic energizer. Please note the stand is not included. Specs: Circumaural open-air design with minimal acoustic damping Diaphragm: Ultra-low-mass 1.5-micron C-grade polyester film coated with semiconductive material Diaphragm radiating surface area: 7 sq in (45.6 sq cm) Frequency response: 8 Hz–35 kHz THD + N: 0.001% at 1 kHz, 100 Vrms differential output Channel separation: -80 dB at 1 kHz Signal-to-noise ratio: -100 dB at 100 Vrms output Headband cover: Wide leatherette-style with 12mm-thick polyethylene foam padding Cushions: Velour-wrapped foam Cable 4 ft with 6 ft extension Dual concentric continuous audio potentiometer volume control with split shaft for balance Input jacks: RCA type (left and right), 3.5mm stereo Weight: 12.45 oz (353 g) These have had little use since purchased new two years ago. In as new condition with no sonic or cosmetic issues. $275 including shipping to you in the lower 48. PayPal is fine. Please email any questions. Thanks. 1 Quote Link to comment Share on other sites More sharing options...
michaelwjones Posted June 18, 2022 Author Share Posted June 18, 2022 Price drop: $275 including shipping in the lower 48. Quote Link to comment Share on other sites More sharing options...
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