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This is a buyer’s market for used headphone amplifiers, and USD 2,000 is a fair price here: it matches the median of five comparable listings, comfortably between the USD 1,599 25th percentile and USD 2,900 75th percentile. It is neither a bargain nor an overreach, so value depends heavily on generation, tube complement, and actual condition.
The WA22 remains a desirable, serious tube amplifier: fully balanced, transformer-coupled, Class A, point-to-point wired, and capable of driving demanding headphones with a choice of balanced and single-ended outputs. Its rich, spacious presentation and strong bass make it especially appealing with high-end dynamic headphones. At this price, confirm whether it is first- or second-generation, check tube health and socket condition, and make sure the original power supply, tube set, and impedance/gain controls are all present.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Woo Audio is a New York-based high-end audio company founded in the mid-2000s, with 2006 widely cited as its launch year. It was built by the Wu family, with Jack Wu as the public face of the brand and key design influence, alongside family members who helped shape the company’s early growth. Its roots are in tube electronics and a strong appreciation for live sound, which has remained central to its identity.
The brand is best known for vacuum-tube headphone amplifiers, especially models such as the WA series, along with electrostatic headphone amplifiers like the WES. Woo also makes a smaller range of speaker amps, plus related audio accessories and cables, while its website and retail focus remain centered on amplification and headphone-oriented listening rather than source components or turntables.
In the market, Woo Audio sits firmly in the boutique high-end niche. It is respected among headphone enthusiasts for handcrafted, valve-based designs, substantial build quality, and a distinctive sonic character often associated with warmth, scale, and refinement. It is not a mass-market brand; instead, it appeals to serious buyers looking for premium, specialized amplification with a strong American-made identity.
See all Woo Audio listings on RADAR.
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![[Customized] Woo Audio WA22 (1st gen) Fully-balanced Headphone Amp - Silver](https://i.ebayimg.com/images/g/CYYAAeSwIftqtqn4/s-l225.jpg)
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