{"product_id":"ferrum-oor-headphone-amplifier-open","title":"Ferrum OOR Headphone Amplifier (OPEN)","description":"\u003ch1\u003eFerrum OOR Balanced Headphone Amplifier\u003c\/h1\u003e\n\u003ch3\u003eBy the designers of Mytek, a balanced head amp with an amazing 8 W of power to drive even the most demanding headphones. Made in Poland.\u003c\/h3\u003e\n\u003cp\u003eEasily drive even your most low impedance, high-current headphones such as Susvara, Abyss, LCD-5, and so on with this 8 W fully balanced headphone amp by Polish brand HEM, founded by the designers behind Mytek. \u003c\/p\u003e\n\u003cp\u003eUse the XLR inputs for a true balanced signal from end to end, or turn a single-ended signal into a truly balanced one via the RCA inputs. The simple front panel design offers just three knobs to control the most important settings.\u003c\/p\u003e\n\u003cp\u003eThe Ferrum sound is all about a balanced and very transparent sound signature, while ensuring there is no listening fatigue. The power amplifier section is fully discrete and was developed in-house to dial in the exact sound that was sought. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eHYPSOS Power Supply\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eWhile the OOR performs beautifully right out of the box, we strongly recommend buying it in a bundle with the matching \u003ca href=\"https:\/\/upscaleaudio.com\/products\/ferrum-hypsos-linear-switching-hybrid-power-supply\" title=\"Ferrum Hypsos hybrid linear\/switching power supply for OOR and other products\"\u003eHYPSOS\u003c\/a\u003e external power supply. This is a hybrid switching and linear supply designed to offer the \u003cspan data-mce-fragment=\"1\"\u003eadvantages of both techniques, low ripple and noise as well as fast transient response and high efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eConnected by the Ferrum Power Link cable, the HYPSOS will unleash unheard-of musicality from the combination with OOR.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully balanced analog headphone amplifier\u003c\/li\u003e\n\u003cli\u003eProprietary discrete power amp technology\u003c\/li\u003e\n\u003cli\u003eExternal PSU available and highly recommended \u003c\/li\u003e\n\u003cli\u003eBalanced 4-pin XLR and unbalanced RCA headphone outputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGain(Balanced; SE):\u003c\/strong\u003e -4 dB, + 6dB, +16 dB;  -10 dB, 0 dB, 10 dB\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInputs:\u003c\/strong\u003e XLR, RCA, 2.5 mm DC connector centre positive, proprietary 4-pin DC connector\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutputs:\u003c\/strong\u003e Balanced 4-pin XLR, 6.35 mm jack\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Power (300 \u003cspan data-mce-fragment=\"1\"\u003eΩ, 60 Ω)\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eSingle Ended:\u003c\/strong\u003e 400 mW, 2 W\u003cbr\u003e\u003cstrong\u003eBalanced:\u003c\/strong\u003e 1.600 mW, 8 W \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 94 kΩ\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePreamp Output Impedance (XLR, RCA):\u003c\/strong\u003e 44 Ω, 22 Ω \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeadphone Output Impedance:\u003c\/strong\u003e \u0026lt; 0.3 Ω\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (WDH):\u003c\/strong\u003e 8.6\" x 8.1\" x 2\" (21.7 x 20.6 x 5 cm)\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e  3.97 lb (1.8 kg)\u003c\/p\u003e","brand":"Ferrum","offers":[{"title":"Default Title","offer_id":48363833426104,"sku":"OOR-OPEN","price":1795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/OOR_front_2048x2048_ef940759-c364-4f00-8700-ed883f2f1495.jpg?v=1741630655","url":"https:\/\/upscaleaudio.com\/products\/ferrum-oor-headphone-amplifier-open","provider":"Upscale Audio","version":"1.0","type":"link"}