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
The World's First Earfield Headphone Monitor

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. The result is a densely detailed, full-frequency sound signature that’s “unapologetically, fundamentally different, [and] somehow manage[s] to also be great,” per Head-Fi’s 5-star review. This engineer-grade sound signature, together with an ergonomic floating-ear design, puts the RAAL-requisite SR1a in “in the same conversation as—if not outright besting—the biggest players in the market.” 

 Note: This product is eligible for a $400 discount at checkout. 

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

All orders will be shipped by Drop.

Estimated ship date is May 21, 2020 PT.

After this product run ends, payment will be collected and orders will be submitted to the vendor up front, making all orders final. Check the discussion for updates on your order.

Recent Activity
Hi Dina, Using the Chesky descending frequency sweep track, I hear the combination decreasing in energy starting around 40 Hz, with bass notes still audible down to 34 Hz. I hear nothing at 32 Hz, so low C from 16 ft. organ pipes is missing. The bass is flattest when the baffles are angled flat against the ears and loses the most energy when the baffles are fully angled outward at 90 degrees to the head. So there is a tradeoff in soundstage dimensionality and forward image projection vs. bass extension. I listen with the baffles angled out 30 degrees from my head and bass is still fulfilling at that position. Further out from that and you might need EQ (see Ian Dunmore's review at Headphones.com). I am not a bass head either, but I can say that the SR1A does not have the deep and linear bass extension (below 25 Hz) of the Abyss, or Audeze, or ZMF. If pushed very hard with powerful bass notes, I hear some intermodulation distortion, but I haven't heard any ribbon slapping or crackling sounds. I do not have experience with the Stax L700. Similar to other Stax headphones, you get very articulate bass with the SR1A as a tradeoff for the lack of massive punching power. However, unlike the Stax models I've heard, you also get great dynamic contrasts in the bass with the SR1A. This makes recordings of drum kits come alive. I listen to vinyl direct-to-discs on the SR1A and the M&K "Flamenco Fever" record sounds alive with these earspeakers in ways that my loudspeakers (VMPS Elixir RM/X, 6 ft. tall ribbon/planar magnetic/dynamic hybrids) can't match.