![Xduoo TA-20 Plus Balanced Class A Tube Amplifier [Mint]](https://i.ebayimg.com/images/g/AT4AAeSwvn5qUNk4/s-l225.jpg)
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Is $415 USD a smart buy for a used xDuoo TA-20 Plus, or are you just paying for the tube glow? At $415 USD, this listing is a strong deal, sitting well below the typical used market where the amp rarely dips under $450 USD and often hovers near its $499 USD retail price. One enthusiast recently snagged a unit for just $195 USD, but that was an outlier; the median used price likely sits around $425–$450 USD, making $415 USD an attractive entry point.
The TA-20 Plus is well-regarded for its hybrid design, combining a 5RZ4 rectifier tube and dual 12AU7 gain tubes with a discrete Class A buffer for punchy, fun sound. It delivers massive power (2000mW at 32Ω unbalanced, 2600mW balanced) and supports fully balanced I/O via XLR and 4.4mm, a rare feature at this price. Unless the listing hides missing accessories or questionable condition, this is a worthwhile buy for anyone wanting tube warmth without sacrificing modern balanced connectivity.
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.
