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Offered is „S6 MKII Schwarz“ by Unison Research as new device from the category „Tube-Fullamp“ on audio-markt.de - the online market place for high-end. The advert with the number 4815019145 ends on 23.12.2026 at 06:18 o'clock.
This is a buyer’s market for a good S6 at this level, and €2,720 lands exactly on the recent median and 25th percentile, so it reads as fair rather than flashy. It is not a bargain on the numbers alone, but it is solidly in line with what comparable recent used listings have been asking.
The S6 is well-liked for its rich, fluid midrange, authoritative tube tone, and the kind of musical ease that makes it a long-term keeper if your speakers suit it. At €2,720, the appeal is a clean, well-cared-for example with decent provenance rather than a risk-heavy price grab; if the unit is complete, healthy, and has recent tubes or service history, it’s a sensible buy for someone who wants the Unison sound without paying into the upper end of the used spread.
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.
