CanJam NYC 2022: Ken's take on Woo Audio and Abyss

Woo Audio’s Jack Wu was in person to debut his new Woo Audio WA23 Luna amp ($9000), which he paired with Abyss's new semiopen-back Diana TC planar headphones ($4495).

The WA23 Luna is a single-ended triode design that can serve as a headphone amp or a preamplifier. Power ratings remain a secret, but Wu said the Luna is a high-gain, point-to-point design. It draws watts from a pair of Electro Harmonix 2A3 power tubes; also on board are two 6C45 driver tubes and a 5U4G rectifier tube. It can drive a variety of headphone designs, Wu said.

Encased in aluminum and finished in black with gold accents, the 40lb Luna and its linear power supply looked fantastic. By design, the large, gold-tinted Alps RK50 volume potentiometer is visible through the chassis. Below the volume control, three small buttons regulate the choice of preamp or headphone amp, high or low impedance, and high or low gain. A fourth, three-position button switches among three inputs, two RCA and one XLR.

Built in Long Island City, New York (once home to Fisher and other hi-fi brands), the WA23 Luna has classic visual appeal, not least because of its two prominent Coke-bottle 2A3s tubes.

Woo Audio Headphone Amplifier

The Abyss Diana TC headphones also possess classic visual appeal. To this reporter's eyes, they resemble '70s-era Quad gear, from the muted color and understated design to its meshy European leather headband—"with soft Alcantara," the website says—and rounded cups with "high-tech ceramic polymer finish." It comes with a 1.5m JPS Labs cable.

The Diana TC is specified at 69 ohms nominal impedance and 90dB/mW sensitivity. Its 63mm planar drivers are complemented by a spiffy outer-cup design: A "Fibonacci side hole pattern enhanced for the new TC speaker driver properly tunes the sound while following the flow of nature," notes the website.

On Radiohead's "Burn the Witch," via the Woo/Abyss pair, the sound was enormous. Thom Yorke and Co wrapped around my cranium on an open, clean, immersive soundstage. I was tempted to buy, borrow, or steal the show samples, but a cooler head prevailed.

Anton's picture

Kind of a Restoration Hardware meets Emelia Earhart vibe!

I’d like too hear that set up.

It looks like sub-20 grand could buy you an ‘exit level’ headphone set up.

tonykaz's picture

You are one of the top 10 Gear Reviewers in the entire World, certainly these two outfits will find a way to accommodate your needs in providing accurate information to readership.

If you were to do Phono Cartridge Reviews with this gear they would be the definitive Phono Reviews, wouldn't they ?

You could also provide accurate descriptions of DAC differences which are nearly impossible for any known reviewer to distinguish ( the guys at Abyss are the only ones that have clarity on this matter ).

I hope you get some long term loaners, you certainly deserve them.

Tony in Florida

ps. I'll be anxious to hear the Jazz Sheppard's reaction to using these tools.

David Harper's picture

$4495.00 for stereo headphones. Wow. What a deal. And I've got a Dodge minivan that you can have for $50,000 dollars. Just let me know.

JHL's picture

Reasoning will never make a Man correct an ill Opinion, which by Reasoning he never acquired.

-Jonathan Swift, 1721