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About this gear
A landmark electrostat design from Koss's pioneering ESP line, the ESP-6 represents early high-fidelity headphone engineering with an open-back configuration that prioritizes transparency and natural soundstage. Its 1968 vintage positions it as a historically significant entry point to electrostatic technology.
About Koss
American headphone pioneer founded in 1958 by John C. Koss in Milwaukee — credited with inventing the first stereo headphone (the SP/3). Koss's Porta Pro, introduced in 1984, remains in production and is one of the most beloved headphones ever made, offering remarkable sound quality and musicality a...
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