05/26/2026
WA24 20th Anniversary Edition received Stereophile Magazine (A+) rating in Recommended Components 2026 Edition Headphones list.
"Woo Audio’s new flagship uses four unusual 3A/109E triode tubes, two for each channel, operated single-ended in parallel. Stereo outputs are balanced (4-pin XLR and 4.4mm Pentaconn) and single-ended (6.3mm and 3.5mm). Listening to The Harry Smith Connection: A Live Tribute to the Anthology of American Folk Music with HiFiMan’s HE-R10P headphones, HR found that the WA24’s slender triodes “seemed right comfortable driving the R10P’s 30 ohm impedance. This record, amp, and headphone combo let me roll enjoyably through all 19 tribute tracks with zero thoughts about sound quality. For that achievement, I gave the Woo a perfect score.” With ZMF Audio’s 300 ohm Vérité closed-backs and a Monique Andrée Serf (aka Barbara) album, HR wrote that “This was the moment when all the WA24’s tube magic came out. I felt like I was hearing this record like no one had ever heard it before. The form and quality of tube beauty that dominated the WA24-Vérité's presentation exceeded any tube beauties I’d previously experienced.” HR summed up his time with the Woo by writing “In my opinion, this transformer-coupled triode amplifier, with no feedback, no resistors, and no capacitors, represents a pinnacle of commercial tube-amp design, one that should be experienced by all audiophiles.” (Vol.48 No.7 WWW)"
read the full review:
Woo Audio's 20th Anniversary WA24 headphone amplifier comes in a distinctive, low-slung chassis that welcomes the eye with gentle angular volumes and bright, frosty-surfaced, copper-toned controls.