{"product_id":"sennheiser-hd-490-pro-open-back-studio-reference-headphones","title":"Sennheiser HD 490 PRO Open-Back Studio Reference Headphones","description":"\u003cp\u003eThe Sennheiser HD 490 PRO is an open-back, over-ear studio reference headphone. Sennheiser says the open design gives a wide, dimensional sound stage and precise localisation. It has a frequency response of 5 Hz to 36,000 Hz (-10 dB) and a 130 ohm impedance.\u003c\/p\u003e\u003ch3 class=\"h6\"\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen-back, circumaural (over-ear) design\u003c\/li\u003e\n\u003cli\u003eFrequency response from 5 Hz to 36,000 Hz (-10 dB)\u003c\/li\u003e\n\u003cli\u003e38 mm dynamic transducer with neodymium magnets and an ultralight voice coil\u003c\/li\u003e\n\u003cli\u003e130 ohm impedance and 105 dB SPL sensitivity at 1 kHz\/1 Vrms\u003c\/li\u003e\n\u003cli\u003eMixing and producing ear pad sets, both washable and replaceable\u003c\/li\u003e\n\u003cli\u003eDetachable 1.8 m cable that plugs into either earcup\u003c\/li\u003e\n\u003cli\u003eBraille-guided L and R earcups and ear pads grooved for glasses wearers\u003c\/li\u003e\n\u003cli\u003eOpen-mesh metal earpiece covers for natural ventilation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 class=\"h6\"\u003eSound Character\u003c\/h3\u003e\u003cp\u003eSennheiser tunes the headphone for an uncoloured frequency response across the full spectrum. The low end comes from a cylinder system that Sennheiser intends to be full and clearly defined. The Open-frame Architecture is designed to reduce distortion and resonance, and THD is listed under 0.2% at 1 kHz and 100 dB SPL.\u003c\/p\u003e\u003ch3 class=\"h6\"\u003eFit and Comfort\u003c\/h3\u003e\u003cp\u003eThe earcups are angled to position the transducer relative to the ear, and the ergonomics are designed to avoid pressure points. The headphone weighs 260 g without the cable. The open-mesh metal covers allow natural ventilation.\u003c\/p\u003e\u003ch3 class=\"h6\"\u003eCable and Accessibility\u003c\/h3\u003e\u003cp\u003eThe detachable 1.8 m cable uses a 3.5 mm jack with a 6.3 mm adapter, and plugs into either earcup. Its coil structure is said to block cable-borne noise. The L and R earcups are Braille-guided, and Sennheiser lists these as patented accessibility features.\u003c\/p\u003e\u003ch3 class=\"h6\"\u003eOrigin and Packaging\u003c\/h3\u003e\u003cp\u003eSennheiser engineered the HD 490 PRO in Germany, and the headphone is hand-assembled in Romania. The packaging is FSC-certified.\u003c\/p\u003e\u003ch3 class=\"h6\"\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHD 490 PRO headphones\u003c\/li\u003e\n\u003cli\u003e3.5 mm to 6.3 mm jack adapter\u003c\/li\u003e\n\u003cli\u003e1.8 m cable\u003c\/li\u003e\n\u003cli\u003eMixing ear pad set\u003c\/li\u003e\n\u003cli\u003eProducing ear pad set\u003c\/li\u003e\n\u003cli\u003eQuick guide\u003c\/li\u003e\n\u003cli\u003eSafety guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdt\u003eType\u003c\/dt\u003e\n\u003cdd\u003eOpen-back, over-ear (circumaural)\u003c\/dd\u003e\n\u003cdt\u003eTransducer\u003c\/dt\u003e\n\u003cdd\u003eDynamic, 38 mm\u003c\/dd\u003e\n\u003cdt\u003eFrequency Response\u003c\/dt\u003e\n\u003cdd\u003e5 - 36,000 Hz (-10 dB)\u003c\/dd\u003e\n\u003cdt\u003eImpedance\u003c\/dt\u003e\n\u003cdd\u003e130 Ω (1 kHz)\u003c\/dd\u003e\n\u003cdt\u003eSensitivity\u003c\/dt\u003e\n\u003cdd\u003e105 dB SPL (1 kHz\/1 Vrms), 96 dB SPL (1 kHz\/1 mW)\u003c\/dd\u003e\n\u003cdt\u003eSound Pressure Level (SPL)\u003c\/dt\u003e\n\u003cdd\u003e128 dB SPL max (1 kHz, 5% THD)\u003c\/dd\u003e\n\u003cdt\u003eTHD\u003c\/dt\u003e\n\u003cdd\u003e\u0026lt;0.2% (1 kHz, 100 dB SPL)\u003c\/dd\u003e\n\u003cdt\u003eCable\u003c\/dt\u003e\n\u003cdd\u003eDetachable, 1.8 m; plugs into left or right earcup\u003c\/dd\u003e\n\u003cdt\u003eConnector\u003c\/dt\u003e\n\u003cdd\u003e3.5 mm jack with 6.3 mm adapter\u003c\/dd\u003e\n\u003cdt\u003eWeight (Grams)\u003c\/dt\u003e\n\u003cdd\u003e260g\u003c\/dd\u003e\n\u003cdt\u003eIn the Box\u003c\/dt\u003e\n\u003cdd\u003eHD 490 PRO headphones, 3.5 mm to 6.3 mm jack adapter, 1.8 m cable, mixing ear pad set, producing ear pad set, quick guide, safety guide\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":45794306982064,"sku":"700286","price":570.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/0753\/8352\/files\/sennheiser-hd-490-pro-open-back-studio-reference-headphones-1.jpg?v=1794189981","url":"https:\/\/acstechnology.com.au\/products\/sennheiser-hd-490-pro-open-back-studio-reference-headphones","provider":"ACS Technology Australia","version":"1.0","type":"link"}