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RAAL-requisite SR1a True Ribbon™ Earfield™ Headphone Monitor System

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RAAL-requisite SR1a True Ribbon™ Earfield™ Headphone Monitor System

  • World's first True Ribbon Earfield™ headphone monitor

  • SR1a earns Gold in High-End Headphone Category, and Silver in Entire Show Category for 2019 Fujiya Avic Headphone Festival in Tokyo 

  • SR1a earns rare 6moons Blue Moon Award in 2019

  • Earfield™ design eliminates heat buildup on the ears

  • Hand-built using the finest materials

  • Made in Serbia

  • Important: 100W Speaker Amp Required. Any loudspeaker amplifier will work. Else, the SR1a may also be powered using the all-new Jotunheim R custom-built by Schiit Audio.

Demo unit available for audition at our office (12pm-8pm on weekdays). Click here to view how to get to us easily.

Special Price $5,299.00

Regular Price: $5,499.00

Save 4 %



The world's first Earfield™ headphone monitor.

The SR1a by RAAL-requisite is the world's first Earfield™ headphone monitor. Experience mixing, mastering, and home listening with unparalleled accuracy and realism in a soundfield devoid of room acoustics and comb-filtering caused by work surface reflections. Earfield™ technology delivers unheard of program accuracy and a speaker-like soundfield experience.

WATCH: Headphone enthusiasts experience the SR1a for the first time.


Ribbons for a reason.

The SR1a is the world’s first True-Ribbon™ headphone. Highly specialized ribbon drivers were developed that reproduce 30Hz to 30kHz bandwidth in order to eliminate the need for sealed chambered bass and allow for open air baffles (both front and back) for a true full-frequency soundfield.

SR1a Freedom.

Professional engineers report that SR1a Earfield Monitors™ reveal more detail and accuracy than even their finest traditional studio monitors or headphones. Helping to achieve high-quality, transferable mix results in non-traditional environments. The accuracy, musicality and portability of the SR1a frees the engineer to work whenever, and wherever they choose.

Incredibly comfortable.

Weighing in at only 425 grams (15 ounces). Unlike standard headphones who’s weight and heat create listener discomfort over time. The SR1a Earfield™ design eliminates heat buildup on the ears providing a cool, natural airflow. Your ears will also appreciate the complete absence of sound pressure against the eardrums caused by traditional sealed can designs. SR1a headphones can be worn comfortably for many hours at any listening level.

Finest materials. Hand built.

The SR1a features; carbon fiber baffles, stainless spring steel headband, aluminum ribbon drivers, plush memory foam bars, and lambskin leather (non-leather option available). Every SR1a is expertly handmade, in Serbia, by the skilled European craftspeople who build world-renowned RAAL ribbon tweeters.

Technical Specifications

Additional Information

Package Contents

SR1a Earfield Monitors™, Ribbon/Amp Interface & Cables, 7' Headphone Y Cable, Custom SR1a Hardcase

Web Reviews
Colour Black
Warranty 5 years (local)
Product Weight (g) 425
Country of Manufacture Serbia
Availability Available
Product Type Headphone
Style/Type Earfield
Driver Configuration True Ribbon
Frequency Response (Hz) 30Hz to 30kHz
Impedance (Ω) 5.6 ohm
Sensitivity 85dB/1mW
Headphone Design Open-Back
Microphone None
Cable Style Detachable (Customisable, IM, E/LS, others)
Input Connectivity XLR (3-Pin)
User Reviews