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Against the recent UK used market, £150 sits right on the median for this model, with plenty of comparable listings spread from about £88 to £222, so this reads as a fair ask rather than a steal or an overreach. If it’s genuinely in good working order, the price is sensible for a tube headphone amp that still draws interest from people who want a warmer, more spacious presentation.
The appeal here is the usual OTL draw: a forgiving, engaging sound with good drive for higher-impedance cans, plus the fun factor of tube rolling if that’s your thing. At this price, the real upside is condition and completeness, so a clean unit with no hum, no channel imbalance, and any original packaging or accessories becomes a straightforward buy.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
xDuoo is a Shenzhen, China-based audio brand that emerged from the country’s fast-growing hi-fi manufacturing ecosystem. Its exact founding year is not consistently stated in the sources available here, and no founder is prominently verified, but the company is widely presented as Shenzhen xDuoo Technology Co., Ltd., with roots in OEM/ODM production before building its own consumer-facing identity.
The brand is best known for headphone amplifiers, DAC/amp combos, portable DACs, tube hybrids, and other desktop-and-portable electronics aimed at personal audio enthusiasts. xDuoo’s lineup has included tube headphone amps, balanced amplifier designs, digital-to-analog converters, and all-in-one sources, typically positioned for headphones rather than loudspeakers or turntables.
In the market, xDuoo sits in the value-to-mid-tier audiophile segment, with a reputation for offering ambitious feature sets, lots of connectivity, and occasional tube-flavored designs at relatively accessible prices. It is not generally considered a luxury or vintage-collector brand, but rather a practical, performance-driven Chinese hi-fi maker with a strong presence among enthusiasts seeking high features per dollar.
See all xDuoo listings on RADAR.
