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Notable for packing a tube-flavored preamp stage and substantial Class-A transistor drive into a tiny, affordable box, the xDuoo MT-602 is a genuinely useful little hybrid rather than a novelty. At US$120, though, this example is ambitious: the comparable-listing median is US$81, while the 75th percentile is US$121. It is effectively top-of-market for this model, so the price needs to be justified by excellent condition and complete accessories.
The MT-602 offers a warm, smooth presentation, strong output for its size, two headphone sockets, RCA and 3.5mm inputs, and a variable RCA pre-out. Its 1,300mW-at-32-ohm rating gives it plenty of headroom, and the replaceable 6J1/6AK5-family tubes invite inexpensive tube rolling. At US$120, confirm that both tubes are healthy, the 12V power supply is included, and the volume control is quiet; otherwise, a lower price closer to the US$81 median would make more sense.
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.
