RAAL-requisite SR1a Earfield Headphone

RAAL-requisite SR1a Earfield Headphone

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Product Description
New from RAAL-requisite, the SR1a Earfield headphone is the first monitor to employ the company’s trademarked “Earfield” technology. Driving this technology are highly specialized ribbon drivers that reproduce 30Hz to 30kHz bandwidth, eliminating the need for sealed chambered bass and allowing for open air baffles Read More


  • RAAL-requisite 
  • Earfield open baffle design
  • Floating near ear, does not enclose ears
  • Impedance: 0.2 ohms (with cabling and ribbon/amplifier interface)
  • Ribbon/amplifier interface impedance: 6 Ohms 
  • Amplifier power rating: 100W
  • Sensitivity: 91dB/1W
  • Max SPL: 111 dB
  • Frequency range: 33Hz-30kHz
  • Weight: 15 oz (425 g)


  • Ribbon/amp interface and cables
  • 7 ft (2.1 m) headphone Y cable
  • Custom SR1a hard case


Estimated ship date is Dec 21, 2021 PT.

Payment will be collected at checkout. After this product run ends, orders will be submitted to the vendor up front, making all orders final.