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De mt-605 is een compacte, maar krachtige hybride hoofdtelefoonversterker die het warme, muzikale karakter van buizen combineert met de precisie en controle van solid-state versterking. De 12au7 buis
At €125, this used xDuoo MT-605 is a strong bargain, sitting well below the typical used market range of €180–€240 for this hybrid tube/digital amplifier. The MT-605 is well-regarded for its warm 12AU7 tube sound paired with a 30W per channel TI TPA3116 output that easily drives bookshelf speakers or high-impedance headphones, offering rare dual-use versatility in a compact 12 × 11.4 × 6.7cm chassis. Its 0.1% THD+N and 85dB SNR ensure clean performance whether you’re running it as a headphone preamp or a small speaker amp.
This unit’s main upside is its hybrid architecture—tube warmth for headphones plus robust speaker drive—making it a rare find at this price. Unless the listing flags missing tubes, cracked casings, or non-functional digital inputs, €125 represents an excellent entry into tube audio with speaker-capable output. Grab it if the seller confirms clean operation and includes the original power cable; no need to wait for a better deal.
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.
