{"product_id":"sennheiser-hd-660s2","title":"Sennheiser HD 660S2","description":"\u003ch4\u003eExperience pristine audio clarity with these open-back audiophile headphones, engineered for discerning listeners who demand exceptional sound quality. The dynamic drivers deliver rich, detailed frequencies across the full spectrum. Dual connectivity options—6.3mm unbalanced and 4.4mm balanced cables—adapt to your audio setup, while the 300Ω impedance ensures compatibility with quality amplifiers and professional equipment.\u003c\/h4\u003e","brand":"Suncoast Audio Direct","offers":[{"title":"Default Title","offer_id":47791464284398,"sku":null,"price":679.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/6683\/0574\/files\/660S2.1_5855ea5a-a8f8-47a4-bf35-f6c136f0edba.webp?v=1773872967","url":"https:\/\/www.suncoastaudiodirect.com\/products\/sennheiser-hd-660s2","provider":"Suncoast Audio Direct","version":"1.0","type":"link"}