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Offered is „Unison Triode 25“ by Unison Research as second-hand device from the category „Tube-Fullamp“ on audio-markt.de - the online market place for high-end. The advert with the number 3302438346 ends on 13.11.2026 at 10:28 o'clock.
At €1,700, this sits well below the recent used-market median of €2,446 and even under the 25th percentile at €1,923, so it reads as a strong buy rather than merely fair. For a respected integrated amp with real pedigree, that’s attractive value in today’s EUR market.
The appeal here is straightforward: this is the kind of amplifier people buy for musical, weighty presentation and a refined tube-driven midrange without jumping into full separates territory. If the unit is genuinely clean and functioning properly, the main upside is getting a well-regarded piece of serious hi-fi at a price that leaves room for sensible tube replacement or servicing later.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Unison Research, an Italian hi-fi icon, traces its roots to 1987, when it was founded in Treviso by Giovanni Maria Sacchetti, a visionary electronics engineer and music enthusiast born in 1945. Sacchetti, who balanced a career in teaching with amplifier design, assembled a team of dedicated audiophiles driven by a singular passion: delivering profound musical pleasure through superior sound. From its inception, the company emphasized handmade craftsmanship entirely within Italy, evolving under subsequent leadership like Giovanni Nasta while honoring Sacchetti's legacy of innovation in tube-based audio.
The brand excels in valve amplifiers, its core strength, with legendary models like the Triode 20—the first integrated amp Sacchetti designed—and the Simply Two, which sold over 30,000 units and propelled global acclaim. Early offerings included the Glowy preamp and Ruler power amp, pioneering designs such as the first stereo amplifier using the 845 triode. Today, Unison Research offers a focused lineup of preamplifiers, power amps, integrated amplifiers, and select speakers in partnership with Opera Loudspeakers, prioritizing pure analog warmth over digital peripherals like DACs or headphones.
Positioned as a high-end boutique leader, Unison Research reigns as Italy's top tube amplifier producer and ranks among Europe's elite ten. Audiophiles worldwide revere its products for their emotional depth, artisanal quality, and timeless appeal, cementing a niche among discerning buyers seeking authentic, soul-stirring hi-fi that transcends mere technical specs.
See all Unison Research listings on RADAR.
