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This is a seller’s market for the MT-602 at this asking price: US$199 sits well above the recent comparable median of US$81 and even clears the US$120 75th percentile, so it reads as ambitious rather than fair. For a used buy, that’s a big spread unless this unit is unusually complete or effectively new.
The MT-602 is still a worthwhile little hybrid headphone amp when you want tube flavor without giving up a clean solid-state drive, and it’s popular for exactly that easy-to-enjoy, tweakable sound. At US$199, I’d want a strong justification: original box, verified low use, upgraded tubes, or a mint, original-owner example. Without that, the value case is weak compared with the broader used market.
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.
