{"product_id":"hd-660-s-refurbished","title":"HD 660S Refurbished","description":"Sennheiser’s new HD 660S is the ideal open, dynamic headphone for the passionate audiophile. Meticulously crafted from hand selected components and specially developed acoustic materials, it delivers incredibly low harmonic distortion for an exceptionally natural, lifelike audio experience. With a lower impedance of 150 ohms, the HD 660 S offers the versatility to enjoy reference class high fidelity sound with stationary and mobile players alike.   \u003cbr\u003e\u003cbr\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eWearing style\u003c\/td\u003e\n\u003ctd\u003eHeadband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003ematte black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response (Headphones)\u003c\/td\u003e\n\u003ctd\u003e9 – 41,500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound pressure level (SPL)\u003c\/td\u003e\n\u003ctd\u003e104 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD, total harmonic distortion\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0,04%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact pressure\u003c\/td\u003e\n\u003ctd\u003e6.0 N ± 1 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEar coupling\u003c\/td\u003e\n\u003ctd\u003ecircumaural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e6.35 mm \/ 4.4 mm Pentaconn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable length\u003c\/td\u003e\n\u003ctd\u003e3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransducer principle\u003c\/td\u003e\n\u003ctd\u003eDynamic, open\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal impedance\u003c\/td\u003e\n\u003ctd\u003e150 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight w\/o cable\u003c\/td\u003e\n\u003ctd\u003e260 g\u003c\/td\u003e\n\u003c\/tr\u003e \u003c\/table\u003e ","brand":"Sennheiser-EMEA","offers":[{"title":"Default Title","offer_id":39581069377730,"sku":"B508826","price":199.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/files\/hd-660-s-refurbished.webp?v=1765813704","url":"https:\/\/eu.sennheiser-hearing.com\/en-pt\/products\/hd-660-s-refurbished","provider":"Sonova Consumer Hearing GmbH","version":"1.0","type":"link"}