{"product_id":"sennheiser-hd-599-open-back-headphones","title":"Sennheiser HD 599 Open-Back Wired Headphones (International Version)","description":"\u003cp\u003eOne thing up front: the HD 599 is open-back. The outer face of each cup is a grille, sound leaks out, and anyone sitting close will hear what you are playing. That is not a fault, it is the trade the open design makes for soundstage. It is a pair that stays at your desk.\u003c\/p\u003e\n\u003ch2\u003eKey features\u003c\/h2\u003e\n\u003ch3\u003eOpen-back, over-ear\u003c\/h3\u003e\n\u003cp\u003eA 38mm driver sits behind an open rear chamber, so sound is not trapped and reflected inside the cup. Frequency response runs 12 Hz to 38,500 Hz, and total harmonic distortion is under 0.1% at 1 kHz, 100 dB SPL.\u003c\/p\u003e\n\u003ch3\u003e50 ohm impedance\u003c\/h3\u003e\n\u003cp\u003e50 ohms is moderate, with a sound pressure level of 106 dB SPL (1 kHz \/ 1 Vrms). A phone or laptop will drive it to volume, but a small DAC or headphone amp gives better grip on wide-dynamic material such as classical and live recordings.\u003c\/p\u003e\n\u003ch3\u003eTwo detachable cables\u003c\/h3\u003e\n\u003cp\u003eThe box includes a 3 m cable with a 6.3 mm straight plug and a 1.2 m cable with a 3.5 mm straight plug, plus a 6.3 mm to 3.5 mm adapter. Desk use and portable use are both covered, and a damaged cable can be replaced on its own.\u003c\/p\u003e\n\u003ch3\u003e250 g with velour pads\u003c\/h3\u003e\n\u003cp\u003e250 g, velour ear pads and a padded headband. The open structure keeps the ears from getting hot, which counts through a Hong Kong summer.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:16px 0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 10px;border:1px solid #ddd;background:#f6f6f6\"\u003eItem\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 10px;border:1px solid #ddd;background:#f6f6f6\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eTransducer principle\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eOpen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eDriver\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eEar coupling\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eOver-ear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eFrequency response\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e12 Hz – 38,500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eImpedance\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e50 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eSound pressure level\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e106 dB SPL (1 kHz \/ 1 Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eTHD\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e\u0026lt; 0.1% (1 kHz, 100 dB SPL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eCables\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e3 m with 6.3 mm straight plug; 1.2 m with 3.5 mm straight plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eAdapter\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e6.3 mm to 3.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #ddd\"\u003e250 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eListening at a fixed spot at home or in a private office, where soundstage and imaging matter.\u003c\/li\u003e\n\u003cli\u003eMixing and editing reference work, where a less congested presentation helps.\u003c\/li\u003e\n\u003cli\u003eAnyone who wants detachable cables so a worn cable can be swapped rather than binning the headphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWho it's not for\u003c\/strong\u003e: commuters. Open-back headphones isolate nothing. Traffic and train noise comes straight through, and the people near you hear your music. They are wrong for the MTR, a library or an open-plan office.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWarranty and delivery\u003c\/h2\u003e\n\u003cp\u003eInternational version · 10-day exchange if faulty · 100% brand new · Viewing by appointment at our Kwun Tong shop, see the warranty policy for details.\u003c\/p\u003e\n\u003cp\u003eNon-TV items are delivered by SF Express (freight collect, paid by the customer), or collected at our Kwun Tong shop (free, 11:00–19:00). For other couriers or delivery to Macau, please WhatsApp us.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it really leak that much sound?\u003c\/strong\u003e\nA: Yes. The open design lets air and sound pass through the back of the cups, and someone a metre or two away in a quiet room will hear it. If you need isolation, choose a closed-back model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will a phone drive them?\u003c\/strong\u003e\nA: At 50 ohms and 106 dB SPL, a phone or laptop headphone jack will reach listening volume. A small DAC or amp gives more control on demanding material.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many cables are included?\u003c\/strong\u003e\nA: Two, a 3 m with 6.3 mm plug and a 1.2 m with 3.5 mm plug, plus a 6.3 mm to 3.5 mm adapter.\u003c\/p\u003e\n\u003ch2\u003eRelated products and guides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en\/collections\/headphone\"\u003eAll headphones and earbuds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en\/blogs\/news\/parallel-import-vs-licensed-tv-hong-kong-guide\"\u003eParallel import vs licensed goods: the full guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en\/pages\/tv-warranty-policy\"\u003eWarranty policy (10-day exchange for headphones, cameras, mics)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en\/policies\/shipping-policy\"\u003eShipping policy\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":48774450249922,"sku":"SENNHEISERHD599OPENBACKH","price":2080.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0695\/4310\/0610\/files\/product_detail_x2_desktop_HD_599_Sennheiser_01.jpg?v=1789052580","url":"https:\/\/elechid.com\/en\/products\/sennheiser-hd-599-open-back-headphones","provider":"Elechid 音立","version":"1.0","type":"link"}