{"product_id":"sennheiser-hd-660s2-open-back-audiophile-wired-headphones-black","title":"Sennheiser HD 660S2 Open-Back Audiophile Wired Headphones - Black","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProduct Description:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSennheiser HD 660S2 wired headphones deliver detailed high-fidelity audio with an open-back design, natural soundstage, and enhanced low-frequency extension. The precision-matched 38mm dynamic transducers reproduce clear vocals, detailed instruments, and controlled bass for critical listening, music production, home audio, and audiophile entertainment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWith a 300-ohm impedance, the HD 660S2 is designed for use with capable headphone amplifiers, DACs, audio interfaces, and premium home stereo equipment. Lightweight construction, soft velour ear cushions, and an ergonomic over-ear fit provide lasting comfort during extended listening sessions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe headphones include both a standard 6.3mm cable and a balanced 4.4mm cable, plus a 3.5mm adapter and protective carrying pouch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eKey Features:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003ePremium open-back audiophile headphones\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDetailed, natural sound with enhanced sub-bass response\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision-matched 38mm dynamic transducers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUltra-light aluminium voice coils\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWide frequency response from 8Hz to 41,500Hz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e300-ohm impedance for high-quality amplified listening\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOpen ear cups provide a spacious, natural soundstage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOver-ear design with soft velour ear cushions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLightweight 260g construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncludes standard and balanced audio cables\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDetachable cable design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMade in Ireland\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIdeal for critical listening, home audio, mixing, and music enthusiasts\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Sennheiser\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProduct Type: Wired Audiophile Headphones\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: HD 660S2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eColour: Black\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeadphone Style: Over-Ear\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAcoustic Design: Open-Back\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTransducer Type: Dynamic\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTransducer Size: 38mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency Response: 8Hz–41,500Hz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImpedance: 300 Ohms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSound Pressure Level: 104dB at 1kHz \/ 1Vrms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTotal Harmonic Distortion: Less Than 0.04%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCable Length: 1.8m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnections: 6.3mm Stereo and 4.4mm Balanced\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdapter: 6.3mm to 3.5mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWireless Connectivity: No\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNoise Cancellation: No\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWeight: Approximately 260g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncluded Components: HD 660S2 Headphones, 6.3mm Cable, 4.4mm Balanced Cable, 3.5mm Adapter and Carrying Pouch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCondition: New\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Uncle Wiener's Wholesale","offers":[{"title":"Default Title","offer_id":50885135302823,"sku":"4260752330374","price":679.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/3939\/6263\/files\/4260752330374.jpg?v=1781558089","url":"https:\/\/unclewiener.com\/products\/sennheiser-hd-660s2-open-back-audiophile-wired-headphones-black","provider":"Uncle Wiener's Wholesale","version":"1.0","type":"link"}