Woo Audio
Long Island City (Queens), New York, New York, United States · founded 2004
One of the most recognizable US boutique tube-amp makers in the headphone world; a family-run business that hand-builds statement-grade vacuum-tube amplifiers (including in-house output transformers) entirely in New York. The WA7 Fireflies and flagship WA33 are widely reviewed reference pieces in the summit-fi headphone space.
Woo Audio is a New York-based, family-owned boutique manufacturer of high-end vacuum-tube headphone amplifiers, DAC/amp all-in-ones, and electrostatic amplifiers. Founded in 2004, it grew from a father-and-sons operation building the WA1 OTL amplifier in a Queens apartment into a respected summit-fi tube-amp maker. Products are designed, hand-assembled, and shipped from its New York workshop, where it also produces components such as its own output transformers. Known for statement pieces like the WA7 Fireflies all-in-one, WA22, and the flagship WA33 and WA234 MONO.
At a glance
- Type
- Manufacturer
- Founder
- Jack Wu and his father Wei-fu Wu (with a second son overseeing manufacturing)
- Founded
- 2004
- Headquarters
- Long Island City (Queens), New York, New York, United States
- Price range
- Premium
- Makes / sells
- Headphone amplifiers, Tube amplifiers, Electrostatic headphone amplifiers, DAC/amp combos, DACs, Headphone stands and accessories, Vacuum tubes
- Known for
- Vacuum-tube (SET/OTL) headphone amplification, Hand-assembled in-house manufacturing, In-house output transformers, Electrostatic (STAX-compatible) amplifiers, Statement/flagship all-in-one DAC/amps
- Website
- wooaudio.com
Notable products
- WA7 Fireflies (3rd Gen) — Cube-shaped all-in-one balanced tube headphone amp/DAC with ESS Sabre DAC and glass tube enclosure; Woo's first all-in-one
- WA22 — Fully balanced transformer-coupled tube headphone amplifier; long-running mid/upper-tier favorite
- WA33 — Flagship fully-balanced dual-power-supply tube headphone amplifier
- WA234 MONO — Top-tier mono-block SET amplifier; among Woo's most expensive models (~$15,900)
- WA1 — Woo Audio's first amplifier (OTL headphone amp), built circa 2004-2006 in a Queens apartment
- WA24 20th Anniversary Edition — Single-ended triode headphone amplifier marking the company's 20-year milestone
Sources: Woo Audio official site (About / History / Manuals) · Woo Audio official site (home) · Woo Audio WA7 Fireflies (3rd gen) product page · Woo Audio WA24 20th Anniversary Edition product page · Stereophile — Woo Audio WA5 review · Headfonia — Woo Audio WA7 Fireflies review · Crunchbase — Woo Audio company profile