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This is an ambitious ask, at £1,435. Your 40-comparable sample puts the median at £633 and the 75th percentile at £1,100, so this sits well above the normal used market. The Mullard upgrade may add appeal, but it needs to be a genuinely desirable, documented installation to justify such a premium.
The WA8 Eclipse remains a special bit of kit: a compact all-tube Class-A headphone amplifier and DAC, with transformer-coupled output, battery operation, very low noise, and enough drive for a wide range of headphones. It can deliver a surprisingly desktop-like presentation in a portable package. At this money, insist on excellent condition, healthy battery life, the original charger, case and cables, and clear proof of the tube upgrade; otherwise, there are better-value WA8 examples closer to the established market.
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.
