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Zum Verkauf steht ein echter Klassiker für HiFi-Enthusiasten: Der elektrostatische Kopfhörer Koss ESP/9 Studio Monitor.
Modell: ESP/9 (Electrostatic Stereophones)
Zustand: Die Polster sind intakt, das Kopfband weist leichte Abnutzungen an den Kanten auf (siehe Fotos)
Anschluss: Originaler 5-poliger Spezialstecker für elektrostatische Speiseteile.
Der Verkauf erfolgt wie abgebildet ohne weiteres Zubehör (kein Energizer/Speiseteil enthalten).
Der Verkauf erfolgt unter Ausschluss jeglicher Sachmängelhaftung. Die Haftung auf Schadenersatz wegen Verletzungen von Gesundheit, Körper oder Leben und grob fahrlässiger und/oder vorsätzlicher Verletzungen meiner Pflichten als Verkäufer bleibt davon unberührt. Keine Rücknahme oder Garantie, da Privatverkauf.
€75 is a fair-to-slightly-above-median ask, but not a bargain against your comps: it sits above the €61 median and below the €80 75th percentile. For this model, that makes it a reasonable buy if the set is complete and working, but not an obvious steal.
What makes it appealing is the ESP/9’s reputation as a classic electrostatic listen: quick, airy, and very resolving, with the kind of transparency that still interests collectors and vintage hi-fi fans. At €75, the upside is in finding a clean, original, fully functioning pair with intact pads, cable, and energizer-related accessories; with electrostatics, condition matters more than cosmetic sheen, so verification is worth doing before pulling the trigger.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Koss Corporation traces its roots to 1953 in Milwaukee, Wisconsin, where founder John C. Koss launched the J.C. Koss Hospital Television Rental Company with just $200, repairing and renting TVs to patients. The pivotal shift came in 1958 when Koss, partnering with engineer Martin Lange Jr., invented the world's first high-fidelity stereo headphones—the SP/3 stereophone—as part of a portable phonograph. This breakthrough birthed personal stereo listening, catapulting the brand from a modest TV rental outfit to an audio pioneer with deep Midwestern heritage.
Koss specializes in headphones, from its iconic full-size Pro/4AA professional models introduced in 1970 to the enduring Porta Pro portable headphones launched in 1984, which blended superior sound, comfort, and lightweight design. While not venturing into amplifiers, speakers, turntables, DACs, or cables, the brand has consistently focused on dynamic, noise-isolating headphones that prioritize musical fidelity over fleeting trends.
Renowned for its vintage appeal and collector status among hi-fi enthusiasts, Koss occupies a niche mid-tier position, emphasizing timeless engineering and value-driven performance rather than high-end luxury or mass-market flash. Its family-owned structure—controlled by the Koss family—and Milwaukee roots underscore a commitment to authentic audio heritage, sustaining loyalty in a market dominated by coastal giants.
See all Koss listings on RADAR.
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