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Koss knows headphones. After all, founder John Koss invented the first stereo headphones in 1958. Since then, Koss has become a leading headphones manufacturer, including what are widely regarded as the best low-end headphones on the market. Koss.com also offers the first and only true over-the-ear Wi-Fi headphones, the STRIVA Pro. If you’re looking for quality cases or extra ear cushions, they can be found at Koss at reasonable prices.