{"product_id":"raal-requiste-and-schiit-jotunheim","title":"Raal Requiste SR1a Headphones and Schiit Jotunheim Headphone Amplifier","description":"\u003cp class=\"p1\"\u003eSchiit built the Jotunheim R for one job: driving RAAL-Requisite SR1a ribbon headphones directly, without the usual speaker amp interface. If you have SR1a or SR1b, this is the dedicated solution and it’s here at a fraction of retail. If you don’t have ribbon headphones, this one isn’t for you — and that’s fine. The person it is for just found their amp.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe SR1a is not a conventional headphone. It does not use a dynamic driver or a planar magnetic membrane. It uses a true ribbon — a pure aluminum conductor suspended in a magnetic field, the same transducer technology found in reference studio monitors and high-end loudspeaker tweeters — across the full frequency range, 30Hz to 30kHz, with open baffles front and back. RAAL calls this Earfield technology: the ribbons are positioned at the ears but radiate like loudspeakers rather than sealing against the head, which is why the staging and imaging behave more like a speaker system than a headphone. The engineering requirement that follows from the ribbon's natural impedance — 0.018 ohms, effectively a dead short — means the SR1a cannot be driven by a headphone amplifier. It requires a loudspeaker amplifier, 50 to 150 watts, connected through the included impedance-matching interface box that brings the apparent load up to a workable 6 ohms. That's not a compromise. It's what allows a ribbon this size to receive real current and do what it does at the ear. Carbon fiber baffles, stainless spring steel headband, lambskin ear cushions.\u003c\/p\u003e\n\u003ch5 class=\"p1\"\u003e\u003cspan style=\"color: rgb(253, 183, 22);\"\u003e\u003cb\u003e$3,999 MSRP \u0026amp; $3,499 MSRP\u003c\/b\u003e\u003c\/span\u003e\u003c\/h5\u003e","brand":"Schiit","offers":[{"title":"Default Title","offer_id":46411644928137,"sku":null,"price":1995.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/4557\/0185\/files\/RaalHeadphonescopy3.png?v=1777786652","url":"https:\/\/echohifi.com\/products\/raal-requiste-and-schiit-jotunheim","provider":"Echo Audio","version":"1.0","type":"link"}