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PLEASE CHECK AVAILABILITY BEFORE CONFIRMING YOUR PURCHASE! Our stock can change any minute – we sell through various sales channels.Brand New! – Closed Box We are authorised dealers of the finest audio gear and musical instruments.Note 1: Free shipping within EU. Shipping price to any other country is an estimate. Please message us for specific shipping price to your particular location.Note 2: This product is custom ordered, please check availability and/or eventual shipping delay.Note 3: This product is factory set for 240V. Other voltages upon order. Manufacturer´s warranty valid only in the EU.Note 4: We sell without taxes anywhere outside Europe and to valid VAT ID companies inside Europe. Please ask us your price without Tax in those cases.Note 5: We can quote any kind of bundle with our products at the most convenient prices. Just visit our store and ask for it.UNISON RESEARCH UNICO CD DUE - HYBRID DAC WITH CD TRANSPORTThe Unico CD Due brings Unison Research right into the popular and versatile digital audio world.Not just a CD player, the Unico CD Due combines a high-level DAC with Valve output stage, a top-end CD mechanism. It’s feature-rich, flexible and customizable to the listener’s preference. A variety of external sources can be connected to the Unico CD Due, including a laptop or computer for playing all known audio formats – including DSD – via USB.Tech specsHybrid DAC with CD transportValves: 4 X ECC83Digital Inputs:1 x USB 2.0: 44.1 – 384 kHz , DSD128, DSD256 Ready Res: 16 to 32 bits1 x S/PDIF: 0.5Vpp on 75 Ohms, 44.1 -192 kHz, DSD64 (DoP) Res: 16 to 24 bits1x AES/EBU: 2Vpp on 110 Ohms, 44.1 -192 kHz, DSD64 (DoP) Res: 16 to 24 bits1 x Toslink™ : 44.1 – 96 Res.: 16 to 24 bits1 x Bluetooth™ 3.0 : 44.1, 48kHz Res: 16 bitsDigital Output:1x S/PDIF 0.5Vpp on 75 Ohms1x AES/EBU 2Vpp on 110 Ohms1x Toslink™Transport: CD-LoaderDisplay 128 X 64 White OLED graphic displayDAC: ESS Sabre ES9018K2M SNR: 128dB (0dBFS, 1kHz, 192kHz, “A” weighted ) THD+N: 0.0003% (0dBFS, 1kHZ, 20Hz-20kHZ)I/V Converter: AD8597/AD8599 ultra low distortion and ultra low noiseValve Output Stage:Number of channels: 2Output stage: Duble Triode, pure class A differential Totem-poleValve model: 4 x ECC83Output audio connectors: 2 x RCA, 2 x XLRFilters: 3 Digital Filters selectable by R.C.FLT 1: Fast Roll-Off, linear PhaseFLT 2: Fast Roll-Off, minimum PhaseFLT 3: Slow Roll-Off, linear PhaseSolid state Output selectableSelectable absolute PhaseDimension: 45cm x 38cm x H 13cmNet weight: 10Kg / 22 lb
At USD4,039 for a used Unison Research Unico CD player of unknown condition, this listing feels ambitious—well above the typical used market range of USD2,587–3,423 (median USD2,806) from recent comparable sales. Without model specifics like Primo or Due, or clear photos of internals, it's tough to benchmark precisely, but expect to negotiate hard or walk unless it's a rare variant in pristine shape.
Buyers should verify the laser assembly, a common failure point in aging Unison CD players after 10+ years, by insisting on a test disc playback demo. Also check for the original remote, manual, and power cable—these often go missing and add real value. Probe the seller on service history to avoid inheriting costly repairs.
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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