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Unleash High-Quality Sound with WA23 LUNA Headphone Amplifier: A Short Review

Updated: Feb 4

WA23 LUNA, compact version flagship WA33 amplifier with a fresh aesthetic that doesn't compromise on delivering an exceptional audio experience, a revolutionary piece that not only breaks away from the mundane design of traditional Hi-Fi equipment but also delivers unparalleled sound quality.

Design: Say farewell to the conventional black boxes that dominate the Hi-Fi landscape. The WA23 LUNA is a visual masterpiece, a departure from the ordinary. The curved lines surrounding the volume controller, showcasing the premium ALPS RK50 potentiometer's brass enclosure, and the meticulously crafted black-and-gold chassis CNC machined from a single piece of aluminum redefine how audio components should look and feel. The WA23 LUNA is a testament to uncompromising quality, both in its internal components and external aesthetics.

Craftsmanship: Each WA23 LUNA undergoes expert hand assembly by master craftsmen with decades of experience in point-to-point wiring. The painstaking attention to detail, patience, and dedication to absolute quality are evident in every unit. This small team, trusted with building flagship amplifiers, ensures that the WA23 LUNA is not just an audio device but a work of art.

Internals: The WA23 LUNA's foundation is a single-ended triode pure Class A design, boasting a pair of 6C45 driver tubes, a pair of 2A3 power tubes, and a single 5U4G rectifier tube. The warm glow emitted by the tubes from the moment you turn it on sets the mood. Every internal component, from the custom-made output transformers to Mundorf capacitors, is carefully selected through extensive listening tests for their sonic capabilities. When the music starts playing, the richness in details, clean highs, wide dynamic range, and deep full bass create an immersive sonic experience.

Functionality: The WA23 LUNA's compact size, complemented by a small external power supply, allows it to seamlessly fit on your desk or the side table next to your easy chair. The marriage of innovation and unrestrained engineering takes performance to new heights, redefining the standards of high-end audio.

Conclusion: In the WA23 LUNA, innovation, craftsmanship, and cutting-edge engineering converge to create a masterpiece that not only captivates the eyes but also creates a product that also elevates your audio experience to unprecedented levels. The WA23 LUNA is more than an amplifier; it's a statement, a commitment to pushing the boundaries of what's possible in high-end audio.

In the WA23 LUNA, innovation, craftsmanship, and sonic excellence harmonize to create a product that transcends the boundaries of high-end audio. More than an amplifier, the WA23 LUNA is a statement — a testament to the relentless pursuit of perfection in both design and sound. Elevate your audio experience; let the WA23 LUNA redefine your perception of what is possible in the world of high-fidelity sound.


  • Introduced in February 2022

  • Single-ended, all-tube design (not hybrid), Class A operation

  • Power tube: 2A3 x 2, driver tube: 6C45 x 2, rectifier tube: 5U4G x 1

  • Self-biasing amplifier

  • Headphone amp or preamplifier

  • Transformer-coupled, Point-to-Point wiring

  • User-selectable HI / LO impedance and HI / LO level for headphone

  • User-selectable output: pre-amp or headphone

  • ALPS RK50 potentiometer in a brass enclosure

  • Mundorf Supreme Silver/Gold capacitor for interstage coupling, one per channel (4pcs)

  • Polytetrafluoroethylene (PTFE) tube sockets

  • Compatible headphones (8–600 Ohms)

  • Inputs: XLR x 1, RCA x 2

  • Outputs: preamplifier (Pre-out) XLR x 1, headphone outputs: 4-pin XLR and 6.3mm (1/4”).

  • Frequency response: 10Hz to 50KHz

  • Preamplifier voltage gain:

  • CNC-machined aluminum chassis milled out of a solid block of aluminum in an anodized, sand-blasting finish

  • Color: black and gold

  • Operating AC voltage: 115v – 230v (voltage below 115v requires step-up transformer)

  • Dimensions:

  • AMP without tubes: 16” L x 10-5/8” W x 4” H (407mm x 270mm x 102mm)

  • AMP with tubes installed 16” L x 10-5/8” W x 7” H (407mm x 270mm x 178mm)

  • PSU: 7” L x 4-1/8” W x 3-1/4” H (178mm x 105mm x 83mm)

  • 1.0m (3.5ft.) custom-made premium umbilical cord [custom length available]

  • Weight: 30 lbs / 13.6 KG

  • Power consumption: 150 watts

  • Designed and assembled in New York, USA

  • Three-year limited warranty [learn more]

In the Box:

  • WA23 LUNA amplifier x 1

  • 6C45 driver tubes x 2

  • 2A3 power tubes x 2

  • 5U4G (5U3C) rectifier tube x 1

  • External linear power supply unit x 1

  • 1.0m (3.5ft.) custom-made premium umbilical x 1

  • Quick start guide

*AC power cord and audio cables are not included

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