Audeze CRBN2 Electrostatic Headphone Review

In the realm of electrostatic headphones, a few manufacturers stand as cornerstones of innovation—STAX, Warwick Acoustics, and HIFIMAN most notably among them. Now, Audeze enters the arena once again with the CRBN2, a flagship-level electrostatic headphone that aims to challenge the elite. Retailing at $5,995, the CRBN2 is designed for uncompromising audiophiles seeking top-tier performance. With a refined magnesium and stainless steel chassis, luxurious leather earpads, and proprietary SLAM technology for enhanced low-frequency response, the CRBN2 isn’t just a statement piece—it’s a serious contender.

What’s in the Box

• CRBN2 Electrostatic Headphones
• Premium Aluminum Carrying Case
• 5-pin Electrostatic Cable
• User Manual

Aesthetics & Build Quality

The CRBN2 exudes sophistication, with a design that combines industrial elegance and subtle flair. The frame utilizes a robust combination of magnesium and stainless steel, while the earcups are dressed in premium leather. Bronze accents punctuate the otherwise dark, matte finish, lending a pop of warmth and contrast without overwhelming the headphone’s stealthy character.

Despite the luxurious materials, the CRBN2 carries noticeable heft—ideal for users who associate physical weight with build integrity. The tight clamping force ensures a secure seal, further supported by its oval earcup design. Audeze includes handling gloves in the case, a nod to the CRBN2’s delicacy and fingerprint-prone surfaces. Overall, the visual presentation is both dramatic and refined, a marriage of precision engineering and high-end styling.

Electrostatic Amplifier Requirement

As with all electrostatic headphones, the CRBN2 requires a dedicated amplifier with a 5-pin Pro Bias (580VDC) output. For evaluation, the STAX SRM-270S amplifier was used, providing ample current and voltage to drive the CRBN2 cleanly.

Unlike offerings from Warwick Acoustics or STAX, Audeze does not bundle the CRBN2 with a proprietary amp, which is worth factoring into your budget. This decision may be seen as a drawback for some, particularly those new to electrostatic systems, but also offers flexibility for audiophiles who prefer to select their own amplification chains.

Technical Specifications

• Form Factor: Over-ear, open-back
• Transducer Type: Push-pull electrostatic
• Diaphragm: Ultra-thin polyimide film infused with carbon nanotubes
• Capacitance: 100 pF (including cable)
• Functional Bias Voltage: 580 VDC (Stax Pro Bias)
• Transducer Size: 120mm x 90mm
• Frequency Response: 10Hz - 40kHz
• Sensitivity: 100dB @ 1kHz, 100V RMS
• THD: <0.1% @ 90dB SPL
• Max SPL: <120dB
• SLAM Technology: Proprietary system for air pressure modulation and bass enhancement

Listening Experience

Soundstage & Imaging

The CRBN2 delivers a spacious, multidimensional soundstage with both lateral expansion and impressive verticality. This immersive quality creates a sense of being surrounded by a live performance rather than listening through headphones. Imaging precision is exceptional, rendering instrument placement with pinpoint accuracy. Whether tracking orchestral spreads or stereo-panned rock mixes, the spatial integrity remains stable and realistic. Despite its electrostatic transparency, the CRBN2 avoids sounding artificially airy—a notable achievement in this category.

Low Frequencies

Bass reproduction is one of the CRBN2’s most unique accomplishments. Thanks to Audeze’s SLAM technology, low frequencies retain electrostatic clarity while introducing a dynamic, physical presence rarely found in this transducer type. Sub-bass content is deep and tactile, with a fast decay and no unwanted bloom. On genres with driving rhythms or cinematic textures, the CRBN2 maintains composure while delivering punch and weight—qualities often sacrificed in traditional electrostatic designs.

Midrange Frequencies

The midrange performance is where the CRBN2’s detail retrieval truly shines. Vocals sit slightly forward, with an organic warmth that complements their clarity. Subtle textures—from breath noise to harmonic layering—are rendered vividly without exaggeration. On harmonically dense material, the CRBN2 excels at separating elements with surgical precision, making it an exceptional tool for professional listening, mixing references, and critical enjoyment alike.

High Frequencies

Treble is articulate, airy, and refined. While there is a touch of roll-off at the extreme upper end, this design choice likely serves to prevent listener fatigue. The highs are never brittle or piercing, but maintain enough sparkle to balance the low-end energy. Cymbals, string harmonics, and upper-register vocals are portrayed with grace and separation, contributing to the CRBN2’s naturalistic sound signature.

Summary

The Audeze CRBN2 is a formidable electrostatic headphone built for critical listeners who demand high-resolution performance with an immersive, musical presentation. Its SLAM-enhanced low end sets it apart from competitors, offering a hybrid appeal to both analytical and emotional listening styles. While the lack of a bundled amplifier may be a barrier for some, the CRBN2 more than compensates with its superior craftsmanship, nuanced sonic profile, and professional-grade detail retrieval.

The Audeze CRBN2 is available today at Audio46.