{"product_id":"sennheiser-hd-660-s-headphones","title":"Sennheiser HD 660 S Headphones","description":"\u003cp\u003e\u003cspan\u003eThe Sennheiser HD 660 S is a reference-class open-back headphone designed for a natural, detailed, and non-fatiguing listening experience. As the successor to the legendary HD 650, it features a new transducer design with lower impedance (150 ohms), making it significantly easier to drive with mobile high-res players and stationary amplifiers alike.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eKEY FEATURES\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eReference Sound: Delivers a warm-neutral sound signature with clear mids and smooth, detailed highs.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e150-Ohm Impedance: Versatile enough to perform brilliantly with dedicated headphone amps or high-quality portable devices.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHand-Selected Transducers: Each pair is carefully matched to maintain superior accuracy and consistency.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSuperseded Model: While replaced by the HD 660S2, the original S model is still highly sought after for its specific \"relaxed\" presentation.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSuperior Comfort: Features lightweight construction and elliptical ear cups with plush, replaceable velour cushions.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDual Cable Options: Includes both a standard 6.35mm (1\/4\") cable and a 4.4mm Pentaconn balanced cable.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eTECHNICAL SPECIFICATIONS\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eType: Open-back, Circumaural (Over-Ear).\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTransducer Principle: Dynamic.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFrequency Response: 10 Hz – 41,000 Hz (-10 dB).\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNominal Impedance: 150 Ohms.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSound Pressure Level (SPL): 104 dB at 1\u003c\/span\u003e\u003c\/p\u003e","brand":"Audio D'Occasion","offers":[{"title":"Default Title","offer_id":68046182088766,"sku":null,"price":379.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2209\/7214\/files\/HD660_1.jpg?v=1793850382","url":"https:\/\/hifipro.ca\/en\/products\/sennheiser-hd-660-s-headphones","provider":"HiFIPRO \/ Audio d'Occasion","version":"1.0","type":"link"}