RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
With unknown condition, the US$399 ask looks ambitious versus your used-market anchor: it sits above the 75th percentile of US$367 and well above the median of US$335. In plain terms, this is priced at the top end of the recent comp set, so I’d only call it justified if it’s unusually complete, lightly used, or includes extras that matter.
The TA-22 is well liked because it gives you a compact tube/DAC/amp-style all-in-one with a distinctive presentation and enough flexibility to suit both headphones and source chains. If the unit is clean and comes with the original power supply, remote, and packaging, it can still be a sensible buy for someone who specifically wants this sound and form factor, but at US$399 I’d want more than a generic “works fine” description before paying full ask.
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.
