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Offered is „S9“ 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 1991691367 ends on 06.12.2026 at 06:02 o'clock.
Is €4,950 close enough to the recent market to justify the buy? Against your own comps, it sits above the €4,428 median and just over the €4,693 75th percentile, so this is ambitious, not a bargain, but it is not wildly out of line either.
That still matters because this is a respected integrated tube amp with a strong reputation for musical, rich, and dynamic sound, especially if you value drive and tone over clinical precision. In good condition, the upside is a clean, ready-to-enjoy piece from a sought-after brand; I’d just make sure the usual tube-amp basics are in order—quiet operation, stable biasing if applicable, and no missing accessories—since at this price you want it to be a straightforward keeper.
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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