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Unison Research Unico 50 Integrated Amp Good working order but slight buzz from mains transformer inaudible from otger side of room but audible closer. 120wpc into 8 ohms. 25kg unboxed.
Unison Research’s Unico series has a good reputation for combining valve sweetness with solid-state drive, so this is a serious integrated rather than a flavour-of-the-month amp. At £1,600, the asking price looks fair to slightly keen against the one clear UK used Unico 50 listing at £1,200 and the broader Unison used market showing strong demand around the brand, though not enough to call this a bargain on price alone.
What makes it appealing is the balance of warmth, grip and real-world power; these are easy amps to live with and can sound more refined than many mainstream rivals at similar money. In good condition, the upside is a clean, ready-to-enjoy example of a well-liked model with genuine cult appeal. I’d mainly want to confirm service history, remote, and that the valves are healthy, since those details matter more than cosmetics on a piece like this.
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.
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