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The result is a headphone for music lovers who want a detailed home listening experience without choosing a fully open earcup design.\u003c\/p\u003e\u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass transducer covers:\u003c\/strong\u003e The distinctive covers reflect sound toward an absorber, helping control resonance rather than merely enclosing the driver.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed circumaural construction:\u003c\/strong\u003e Around-ear isolation helps keep external sound from competing with quieter musical detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandcrafted microfiber pads:\u003c\/strong\u003e Soft contact surfaces provide comfort and passive attenuation for sustained listening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamped metal headband:\u003c\/strong\u003e An internal damping element helps control vibration through the headphone structure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision cable design:\u003c\/strong\u003e A symmetrical, impedance-matched low-capacitance cable supports the analog signal path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced connection option:\u003c\/strong\u003e The listed 4.4 mm connection accommodates an appropriately equipped balanced headphone amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe dynamic, closed transducers have a 300-ohm impedance. Frequency response is specified at 12–43,800 Hz at -3 dB and 6–48,000 Hz at -10 dB, showing how the measurement threshold changes the quoted range.\u003c\/p\u003e\u003cp\u003eSound pressure is rated at 103 dB at 1 kHz\/1 V, with distortion below 0.02% at 1 kHz and 100 dB in the detailed specification. Weight is 360 g without the cable, and the three-metre cable supports placement beside a dedicated listening chair.\u003c\/p\u003e\u003ch2\u003eIdeal Use Cases\u003c\/h2\u003e\u003cp\u003eHD 820 suits audiophile listening where a closed design is preferable to open-back headphones, including shared home environments. Its high-impedance construction and detailed presentation are particularly appropriate for a capable dedicated headphone setup.\u003c\/p\u003e\u003ch2\u003eCompatibility and Connectivity\u003c\/h2\u003e\u003cp\u003eListed analog connections are 6.35 mm and balanced 4.4 mm, with an XLR-4 cable identified as optional. 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Title","offer_id":40628072284354,"sku":"534411","price":72.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/files\/product_detail_x2_desktop_534411_4969c2d5-1958-4ab9-a30c-69aa556f672e.jpg?v=1755178817"},{"product_id":"ch-800-p-1","title":"Balanced cable for HD 800 series, 3.00 m, 4.4 mm jack","description":"\u003cp\u003eBalanced connection cable for HD 800 series, length 3.00 m, 4.4 mm jack.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 3.00 m\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the player side: 4.4 mm jack plug, 5-pin\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the headphone side: proprietary ODU, both-sided connectors (pinouts scheme: Sennheiser HD 800 series)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable material: oxygen-free coper (OFC), 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Its 56 mm dynamic transducers direct sound toward the ears at an angle, while absorber technology controls resonant energy that can obscure finer musical detail.\u003c\/p\u003e\u003cp\u003eHandcrafted microfiber pads and a vibration-damping headband combine comfort with carefully considered mechanical design. Developed in Germany and precision-built in Ireland according to the current description, HD 800 S is intended for dedicated, detail-focused listening.\u003c\/p\u003e\u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e56 mm transducers:\u003c\/strong\u003e Large purpose-designed drivers form the foundation of the headphone’s spatial presentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResonance absorber technology:\u003c\/strong\u003e Absorbing unwanted resonant energy helps reveal quieter frequency detail that could otherwise be masked.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAngled sound delivery:\u003c\/strong\u003e The earcup geometry supports a natural sense of placement and acoustic space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen circumaural design:\u003c\/strong\u003e Uncovered earcups prioritize acoustic openness over environmental isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandcrafted microfiber pads:\u003c\/strong\u003e Soft pads support comfort during extended listening sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamped headband construction:\u003c\/strong\u003e Layered metal and plastic construction helps attenuate vibration reaching the earcups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced cable option:\u003c\/strong\u003e Listed balanced 4.4 mm connectivity accommodates suitable reference headphone equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe dynamic, open headphone has a 300-ohm impedance and a specified 4–51,000 Hz response at -10 dB. Sensitivity is listed at 102 dB\/1 V, with distortion below 0.02% at 1 kHz\/1 V RMS.\u003c\/p\u003e\u003cp\u003eWeight is 330 g without the cable, and the three-metre cable supports home listening placement. The absorber system and angled 56 mm transducers address resonance and spatial reproduction through acoustic construction rather than virtual surround processing.\u003c\/p\u003e\u003ch2\u003eIdeal Use Cases\u003c\/h2\u003e\u003cp\u003eHD 800 S suits audiophiles and critical listeners seeking a spacious reference for recordings and equipment evaluation. Its open construction is best matched to quiet, dedicated listening where fine detail is not competing with environmental noise.\u003c\/p\u003e\u003ch2\u003eCompatibility and Connectivity\u003c\/h2\u003e\u003cp\u003eThe product lists 6.35 mm unbalanced and 4.4 mm balanced cable connections, with an XLR-4 cable as an optional accessory. Use the correct connection for the amplifier and a source suitable for a 300-ohm headphone. 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Listed headphone formats include XLR3, XLR4, 6.35 mm and dual balanced 4.4 mm Pentaconn. PC DSD use requires the documented ASIO driver setup. 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The transducer is encased by stainless steel, while the headband and headphone mounting utilises the most advanced materials developed in the aerospace industry for high strength with minimal weight.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e**Absorber technology of the HD 800 S**\u003cbr data-mce-fragment=\"1\"\u003eThe enhanced sound reproduction of the HD 800 S is achieved through the addition of the innovative absorber technology that was pioneered in the Sennheiser IE 800 – a breakthrough that preserved the audibility of very high frequency sounds by eliminating a phenomenon known as the “masking effect”, where the human ear struggles to hear frequencies of sound when lower frequencies of a higher volume occur at the same time. By absorbing the energy of the resonance, Sennheiser’s patented absorber technology prevents any unwanted peaks and allows all frequency components – even the finest nuances – in the music material to become audible. This innovation was a key element in making the IE 800 the world’s best sounding in ear headphone, and in the HD 800 S it helps to bring even greater purity and precision.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eSuch enhancements build on the formidable achievements of the classic, with the 56mm sound transducer – the largest ever used in dynamic headphones. The unique ear cup design directs sound waves to the ear at a slight angle to create an impressively natural and spatial listening experience. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eWhile much appears the same, the enhanced performance within is revealed by a distinctive new look, with the silver finish of the 2009 classic HD 800 making way for high-class matt black for the HD 800 S.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOptimized Sound Signature through innovative sound absorber technology\u003c\/p\u003e\n\u003cp\u003eOptional accessory: cable with balanced XLR-4 connector\u003c\/p\u003e\n\u003cp\u003eHigh-class matt black metal parts\u003c\/p\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":40668907503810,"sku":"B506911","price":1299.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/HD_800_black-sq-01-sennheiser_659f4048-e18b-467c-bb75-f3a2d52b5eec.jpg?v=1747659743"},{"product_id":"hdv-820-refurbished","title":"HDV 820 Refurbished","description":"\u003cdiv id=\"product-intro-text-only-23192\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"product-intro-text-only product-intro-text-only__gray\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"wrapper\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"product-intro-text-only__section\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"product-intro-text-only__copy-markdown title-text\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eHDV 820\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e- The master key to your music: the HDV 820 unlocks the potential of your Sennheiser headphone collection with class-leading DAC and headphone amplifier technology. 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Plain cable.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 1.20 m\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the player side: 2.5 mm jack plug, 4-pin\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the headphone side: MMCX, with proprietary Senheiser\u003c\/li\u003e\n\u003cli\u003erecession, both-sided connectors (pinouts scheme: MMCX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable: plain\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColor: silver-grey, plastic parts black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser IE 200\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 300\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 600\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 900\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAlready included in delivery of:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser IE 900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":40750070300866,"sku":"508959","price":149.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/product_detail_x2_desktop_MMCX_CABLE_WITH_2.5_MM_PLUG.jpg?v=1755178727"},{"product_id":"mmcx-cable-with-3-5-mm-plug","title":"Cable for IE series, 1.20 m, 3.5 mm jack, plain","description":"\u003cp\u003eConnection cable for IE series, length 1.20 m, 3.5 mm jack. Plain cable.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 1.20 m\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the player side: 3.5 mm jack plug, 3-pin\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAnschlussstecker auf Kopfhörer-Seite: MMCX, mit proprietärer Sennheiser-Vertiefung, beidseitige Stecker (Pinbelegungs-Standard: MMCX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable: plain\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColor: silver-grey, plastic parts black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser IE 200\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 300\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 600\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 900\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAlready included in delivery of:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser IE 600\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":40750180958402,"sku":"508960","price":99.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/MMCX_CABLE_WITH_2.5_MM_PLUG_1.jpg?v=1755178726"},{"product_id":"ie-600","title":"IE 600","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eSennheiser IE 600 combines intimate, tonally neutral sound with impactful bass in a carefully constructed wired in-ear earphone. TrueResponse transducers and dual resonator chambers work together to reduce masking resonances and preserve fine musical detail.\u003c\/p\u003e\u003cp\u003e3D-printed amorphous-zirconium housings give the earphones a distinctive material foundation. Adjustable ear hooks and a selection of silicone and memory-foam tips let you tailor the fit, while reinforced cables support use with different headphone outputs.\u003c\/p\u003e\u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual resonator chambers:\u003c\/strong\u003e Acoustic resonance control helps reveal detail that unwanted peaks could otherwise mask.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrueResponse tuning:\u003c\/strong\u003e A miniature dynamic-driver design supports natural voicing with bass impact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZR01 zirconium housings:\u003c\/strong\u003e The amorphous-metal construction emphasizes durability and a distinctive premium finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision driver assembly:\u003c\/strong\u003e Controlled manufacturing minimizes variation between the miniature transducers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo tip materials:\u003c\/strong\u003e Silicone and memory-foam options in S, M and L help you personalize comfort and isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable ear hooks:\u003c\/strong\u003e Adapt the cable support to the shape of your ears for a secure fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforced cable choices:\u003c\/strong\u003e Para-aramid reinforcement and gold-plated MMCX connections support regular use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe single dynamic pressure-chamber system has an 18-ohm system impedance and a 4–46,500 Hz frequency response. Distortion is below 0.06% at 1 kHz and 94 dB, with sensitivity of 118 dB at 1 kHz\/1 V RMS.\u003c\/p\u003e\u003cp\u003eThe listed cable length is 125 cm, providing practical reach for portable listening. Acoustic isolation depends on the ear-canal seal, making the selection of tip size and material part of achieving consistent sound.\u003c\/p\u003e\u003ch2\u003eIdeal Use Cases\u003c\/h2\u003e\u003cp\u003eIE 600 suits audiophiles who want compact wired earphones with neutral voicing, detailed reproduction and a durable housing. It is appropriate for capable portable players or home headphone equipment where fit and direct analog listening take priority over wireless convenience.\u003c\/p\u003e\u003ch2\u003eCompatibility and Connectivity\u003c\/h2\u003e\u003cp\u003eListed cable connections are 3.5 mm single-ended and 4.4 mm balanced, using gold-plated MMCX earpiece connectors. Match the cable to the appropriate source output and avoid treating balanced and single-ended sockets as interchangeable. Bluetooth and microphone functions are not specified.\u003c\/p\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":41546105979074,"sku":"508948","price":799.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/ie_600_product_shot_1_final.png?v=1755694736"},{"product_id":"ie-600-refurbished","title":"IE 600 Refurbished","description":"\u003cp data-mce-fragment=\"1\"\u003eThe IE 600 from Sennheiser embodies the audiophile passion for quality with meticulous craftsmanship and exquisitely neutral sound. For exceptional lifetime durability and a unique premium aesthetic, the IE 600 features 3D printed housings made from ZR01 amorphous zirconium for triple the hardness and bend resistance of steel. Its dual resonator chambers eliminate masking resonances for exceptional fidelity, while the TrueResponse transducers ensure incredible tonally neutral, intimate, true-to-life voicing and impactful bass response.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePrecision assembly: Transducers are manufactured by Sennheiser using an advanced process to ensure the lowest possible unit-to-unit variations in the miniature, dynamic drivers\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDeveloped in Germany\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e3.5 mm and 4.4 mm para-aramid reinforced cables with gold-plated MMCX connectors\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eEnsure an optimal fit - Selection of silicone and memory foam ear adaptors in 3 sizes (S\/M\/L) and adjustable ear hooks\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eImpedance: 18 ohms system impedance\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFrequency response: 4 – 46,500 Hz\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTHD : \u0026lt;0.06% (1 kHz, 94 dB)\u003c\/p\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":42125478297794,"sku":"B508948","price":449.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/ie_600_product_shot_1_final_56e26a3d-47f4-4d23-93d5-244ac5c8057f.png?v=1747659712"},{"product_id":"dust-protection-1","title":"Dust Protection Cover for HD 800S (Pair)","description":"\u003cspan data-mce-fragment=\"1\"\u003eDust protection for HD 800 S (Black)\u003c\/span\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":42572652249282,"sku":"534410","price":22.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/files\/Cables_Placeholder_copy.webp?v=1768991907"},{"product_id":"mmcx-cable-with-4-4-mm-plug","title":"Balanced cable for IE series, 1.20 m, 4.4 mm jack, plain","description":"\u003cp\u003eBalanced connection cable for IE series, length 1.20 m, 4.4 mm jack. Plain cable.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 1.20 m\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the player side: 4.4 mm jack plug, 5-pin\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the headphone side: MMCX, with proprietary Senheiser recession, both-sided connectors (pinouts scheme: MMCX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable: plain\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColor: silver-grey, plastic parts black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser IE 200\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 300\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 600\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 900\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAlready included in delivery of:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser IE 600\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser-EMEA","offers":[{"title":"Default Title","offer_id":42604083970242,"sku":"508961","price":149.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/508960_8219c19a-d142-4ac7-af88-0e99b1143cd2.png?v=1755178675"},{"product_id":"cable-3m-with-plug-odu","title":"Cable for HD 800 series, 3.00 m, 6.35 mm jack","description":"\u003cp\u003eConnection cable for HD 800 series, length 3.00 m, 6.35 mm jack.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 3.00 m\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the player side: 6.35 mm jack plug, 3-pin\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the headphone side: proprietary ODU, both-sided connectors (pinouts scheme: Sennheiser HD 800 series)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable material: oxygen-free coper (OFC), silver-plated\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColor: black, ODU plugs silver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser HD 800\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 800 S\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 820\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":42838171484354,"sku":"566275","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/files\/product_detail_x2_desktop_566275_b95b116c-567a-4c6c-80d5-c2b8efe1e1b8.jpg?v=1755178651"},{"product_id":"hd-660s2","title":"HD 660S2","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eSennheiser HD 660S2 brings a warm, intimate sound signature to open-back audiophile listening, with extended sub-bass adding weight beneath precise musical detail. Smooth treble and natural timbre make the presentation inviting rather than deliberately forceful.\u003c\/p\u003e\u003cp\u003eOptimized transducer airflow, a revised surround and a lightweight voice coil support the acoustic design. Plush velour pads and an ergonomic headband complement the relaxed tuning, making the headphone appropriate for longer sessions with favourite recordings.\u003c\/p\u003e\u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended sub-bass:\u003c\/strong\u003e Deeper low-frequency reach adds impact to bass instruments while preserving a natural presentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e38 mm precision transducers:\u003c\/strong\u003e Purpose-designed drivers combine detailed reproduction with the headphone’s warm tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVented magnet system:\u003c\/strong\u003e Controlled airflow and ventilation help minimize distortion in the driver assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight aluminum voice coil:\u003c\/strong\u003e Low moving mass supports responsive reproduction of musical transients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen-back breathability:\u003c\/strong\u003e The open design and plush cushions support comfortable sustained listening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIreland-built construction:\u003c\/strong\u003e The product’s listed Irish manufacture accompanies carefully developed acoustic components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo output formats:\u003c\/strong\u003e Standard 6.3 mm and balanced 4.4 mm connections accommodate suitable headphone equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe dynamic, open transducers use a 300-ohm impedance and cover 8–41,500 Hz. Sensitivity is specified at 104 dB at 1 kHz\/1 V RMS, with total harmonic distortion below 0.04% at 1 kHz and 100 dB.\u003c\/p\u003e\u003cp\u003eThe headphone weighs 260 g and uses a 1.8 m cable. Its optimized surround, diaphragm and vented magnetic structure address airflow and driver behaviour, while the velour pads and over-ear fit emphasize long-session comfort.\u003c\/p\u003e\u003ch2\u003eIdeal Use Cases\u003c\/h2\u003e\u003cp\u003eHD 660S2 suits audiophiles who want detailed open-back listening with a warmer balance and more substantial sub-bass. It is particularly appropriate for quiet home sessions where tonal nuance and physical comfort matter more than environmental isolation.\u003c\/p\u003e\u003ch2\u003eCompatibility and Connectivity\u003c\/h2\u003e\u003cp\u003eThe product lists 6.3 mm and balanced 4.4 mm plugs, plus a 6.3-to-3.5 mm adapter. Use the correct cable for the output and a source suitable for a 300-ohm headphone. Its connection is wired analog; Bluetooth and ANC are not part of the documented setup.\u003c\/p\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":42872720654530,"sku":"700240","price":450.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/660S2.1.png?v=1755694722"},{"product_id":"hd-660-s-2-refurbished","title":"HD 660S2 Refurbished","description":"\u003cp data-mce-fragment=\"1\"\u003eEnjoy your music on a completely new level. An intimate, relaxed sound signature combines with outstanding precision and exceptional comfort — and now, extended sub bass — for a deeply moving experience. The extremely precise yet non-fatiguing sound of the HD 660S2 delivers even more impact with extended sub bass. With an optimized surround, transducer airfl ow, and coil our engineers doubled the sound pressure at the lowest octaves. You can feel the lowest note on the piano (27.5 Hz) or the kick of the bass drum (45-60 Hz) as if you were there. The relaxed tone and open-back design make this extremely comfortable headphone great for long sessions. With warm tuning, smooth treble, and strong bass, the standard-setter for extended listening is now the standard-setter for extended bass as well.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eAUDIOPHILE SOUND\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis warm, inviting signature combined with extended sub bass makes listening uniquely pleasant and rewarding. And with comfort this good, it practically begs you to keep going for endless sessions. That’s how HD 660S2 combines the best of many worlds to give you an intimate experience you won’t want to live without.–  Natural, relaxed, high-fi delity sound with extra sub bass: Optimized surround and dia-phragm with new voice coil with 300-ohm impedance –  38mm high-performance transducers built in Ireland: Steel mesh damping follows the driver’s geometry to control air displacement, while the magnetic yoke includes milled air vents for optimal ventilation, which minimizes distortion –  Uniquely powerful vented magnet system for minimized distortion–  Ultra-light aluminum voice coil with 300-ohm impedance for excellent impulse response–  Intimate sound with great timbre and deep, accurate sub bass\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eEXCEPTIONAL COMFORT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eExceptional comfort and build quality: The open-back design and plush ear cushions offer exceptional breathability for long listening sessions–  The velour earpads of the HD 660S2 can only be described as a tactile pleasure–  The low total weight and ergonomic headband rule out any potential discomfort on top of your head as well. Combined with excellent build quality made in Ireland, you’ll quickly grow attached to a listening experience that’s as physically pleasing as the warm, non-fatiguing sound at its heart.– \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eGlobal 2-year warranty offers peace of mind for your audio equipment investment.\u003c\/p\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":42872724226242,"sku":"B700240","price":339.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/products\/660S2.1_60fa5b21-cc0d-4597-9ed4-27ffbcd74ac2.png?v=1747659697"},{"product_id":"mmcx-microphone-cable-with-3-5-mm-plug","title":"Cable for IE series, 1.20 m, 3.5 mm jack, with microphone, braided","description":"\u003cp\u003eConnection cable for IE series, length 1.20 m. With in-line microphone and 1-button remote for call control. Braided cable. No volume control.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 1.20 m\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the player side: 3.5 mm jack plug, 4-pin (pinouts scheme: CTIA)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the headphone side: MMCX, with proprietary Senheiser recession, both-sided connectors (pinouts scheme: MMCX)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable: braided\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColor: silver-grey, plastic parts black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser IE 200\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 300\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 600\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser IE 900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":47380597539157,"sku":"700259","price":69.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/files\/csm_700259_3dc8df1a54.png?v=1755178644"},{"product_id":"balanced-4-4-mm-cable","title":"Balanced cable for HD 500 series, 1.80 m, 4.4 mm jack","description":"\u003cp\u003eBalanced connection cable for HD 500 series, length 1.80 m.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 1.80 m\u003c\/li\u003e\n\u003cli\u003eConnection plug on the player side: 4.4 mm jack plug, 5-pin\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnection plug on the headphone side: 2.5 mm jack plug, with Sennheiser twistlock, 4-pin (pinouts scheme: Sennheiser HD 500 series)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable diameter: 3.0 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColor: black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSennheiser HD 505\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 518\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 550\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 558\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 559\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 560S\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 569\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 599\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 599 SE\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSennheiser HD 620S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNotice: \u003c\/strong\u003eThe pinouts scheme on the 4.4 mm jack plug follows the usual standard:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip: L+\u003c\/li\u003e\n\u003cli\u003eRing 1: L-\u003c\/li\u003e\n\u003cli\u003eRing 2: R+\u003c\/li\u003e\n\u003cli\u003eRing 3: R-\u003c\/li\u003e\n\u003cli\u003eSleeve: GND\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!----\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":48501323202901,"sku":"700403","price":99.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/files\/eyJwYXRoIjoic29ub3ZhXC9maWxlXC9ZTlBuRDF3Mjd5TEQ5QkcxZFNFMi5qcGcifQ_sonova_wOmFMlhWOPSddioliiM4AVSfeCHDtC1nGQR8sZkk2YQ.jpg?v=1755178628"},{"product_id":"mmcx-braided-cable-4-4mm-plug","title":"Balanced cable for IE series, 1.20 m, 4.4 mm jack, braided","description":"\u003cp\u003e\u003cspan\u003eBalanced connection cable for IE series, length 1.20 m, 4.4 mm jack. Braided cable.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical data:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eLength: 1.20 m\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnection plug on the player side: 4.4 mm jack plug, 5-pin\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnection plug on the headphone side: MMCX, with proprietary Sennheiser recession, both-sided connectors (pinouts scheme: MMCX)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCable: braided\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eColor: silver-grey, plastic parts black\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSennheiser IE 200\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSennheiser IE 300\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSennheiser IE 600\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSennheiser IE 900\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNotice: \u003c\/strong\u003eThe pinouts scheme on the 4.4 mm jack plug follows the usual standard:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip: L+\u003c\/li\u003e\n\u003cli\u003eRing 1: L-\u003c\/li\u003e\n\u003cli\u003eRing 2: R+\u003c\/li\u003e\n\u003cli\u003eRing 3: R-\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSleeve: GND (unused for this cable)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":49905835311445,"sku":"700260","price":69.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/9636\/8578\/files\/IE_200_Braided_Balanced_Cable_2.jpg?v=1770210689"}],"url":"https:\/\/eu.sennheiser-hearing.com\/en-it\/collections\/feature-connector-4-4\/50-150.oembed","provider":"Sonova Consumer Hearing GmbH","version":"1.0","type":"link"}