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RAAL-requisite SR1b Ribbon Headphone

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.

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The True Ribbon™ SR1b Earfield™ headphone monitor features an updated external appearance and silver internal wiring!

Our Take

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.

Professional engineers report that SR1 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 SR1 frees the engineer to work whenever, and wherever they choose.

Incredibly comfortable and Hand built with the finest materials.

Weighing in at only 425 grams (15 ounces). Unlike standard headphones whose weight and heat create listener discomfort over time. The SR1 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. SR1 headphones can be worn comfortably for many hours at any listening level. The SR1b features; carbon fiber baffles, stainless spring steel headband, aluminum ribbon drivers, plush memory foam bars, and lambskin leather (non-leather option available). Every SR1 is expertly handmade, in Serbia, by skilled European craftspeople!

Easier than Ever

When selected, the included RAAL-requisite TI-1 Transformer Interface safely transforms your conventional headphone amp into a huge current ribbon driving monster! Just connect the included HPL-1a 4-pin XLR Female to 4-pin XLR Female cable to an amp capable of at least 2watts into 32ohms. For driving your open-baffle SR1 headphones, left/right OB Compensation adapters in XLR (balanced) & RCA (single-ended) variants have been provided. Just plug them into either of your amp’s inputs (XLRs or RCAs) and plug your interconnect cable into the OB Compensation barrel. That way, whenever you select that input, you will correctly drive your SR1 True-Ribbon™ headphones.

What's Included

Headphone Only Package

• SR1b Earfield Monitors™

• 1 Year manufacturer warranty

Standard Package

• SR1b Earfield Monitors™

• 1 Year manufacturer warranty

• TI-1 Transformer Interface

• OB Compensation barrel for Balanced XLR & Single-Ended RCA amplifier inputs

• ITI Cable for connecting TI-1 conventional 4-pin XLR headphone level amp output

• SC2 Cable for connecting True-Ribbon™ headphones to TI-1 interface

Pro Package

• Includes everything listed for the standard package PLUS a Waterproof Flight Case

The Specs

TI-1a Recommend Conventional Headphone Amp Output: 2 to 6 Watts at 32 Ohms

Earfield™ open baffle. Floating near ear, does not enclose ears.

0.2 Ohms with cabling. *Used in series Ribbon/Amplifier Interface.

Amplifier Interface
*Ribbon/Amplifier Interface. 6 Ohms. Use any loudspeaker amplifier.

Amplifier power rating

91 dB/1W

111 dB

Frequency Range
30Hz - 30KHz

32 ohms

425 grams

TI-1a Included Content


About RAAL-requisite

RAAL-requisite represents two legendary brands in ultra high-end audio, coming together, to create a sound unlike anything the world has ever heard before.