{"product_id":"unison-research-sinfonia-stereo-tube-integrated-amplifier","title":"Unison Research Sinfonia Stereo Tube Integrated Amplifier","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Unison Research Sinfonia Stereo Tube Amplifier merges classic tube technology with modern design to deliver a warm, detailed sound. This amplifier, part of Unison Research’s classic line, combines advanced engineering and high-quality materials, offering an authentic listening experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003ePure Class A Tube Amplification: \u003c\/strong\u003eFour KT88 tubes in a single-ended parallel ultra-linear configuration provide natural sound with minimal distortion.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eDual-Mono Design:\u003c\/strong\u003e Minimizes cross-channel interference, enhancing clarity and channel separation.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eAdvanced Power Supply:\u003c\/strong\u003e High-voltage stabilized power supply with large heat sinks and a non-magnetic stainless steel top plate ensures consistent performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eAutomatic Bias Circuit:\u003c\/strong\u003e Adjusts for tube performance drift in real time, maintaining sound quality over the long term.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eVersatile Connectivity:\u003c\/strong\u003e Six gold-plated RCA inputs, speaker terminals for 4Ω and 8Ω loudspeakers, and a low-impedance output for active subwoofer connection.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003eAbout Unison Research\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUnison Research, founded in Italy, has a long-standing reputation for crafting high-fidelity audio equipment that marries traditional craftsmanship with cutting-edge technology. Each product reflects their passion for music and dedication to producing equipment that delivers both sonic excellence and visual beauty. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003eDesign\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Sinfonia amplifier is part of Unison Research’s classic line, which also includes the Preludio and Performance models. Inspired by the acclaimed Performance amplifier, the Sinfonia combines elegance with functionality. The control knobs are crafted from solid, non-magnetic stainless steel, offering a smooth, precise feel. Wooden accents not only enhance the visual appeal but also serve to dampen resonance, reducing unwanted vibrations that can interfere with sound quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003eBuild\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Sinfonia is constructed with durable, high-quality materials. The chassis, made from non-magnetic stainless steel, helps keep internal components cool. The large heat sinks, essential for the high-voltage stabilized power supply, contribute to the amplifier's reliability and stability. Each component, from resistors to valve bases, has been carefully selected to ensure long-lasting performance.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003ePerformance\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Sinfonia’s pure Class A amplification, driven by four KT88 tubes, delivers rich, warm sound with excellent linearity and minimal distortion. Its dual-mono design ensures each channel operates independently, reducing cross-channel interference and preserving sound integrity. The automatic bias circuit continuously adjusts the KT88 tubes to compensate for performance drift, ensuring consistent sound quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003eVersatility\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDesigned for flexibility, the Sinfonia offers six gold-plated RCA inputs for connecting multiple audio sources. The amplifier’s advanced power supply provides a stable, high-quality output. Additionally, the Sinfonia includes a low-impedance output terminal for connecting an active subwoofer, making it adaptable to various audio setups.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eThe Sinfonia's back panel is equipped with gold-plated speaker terminals compatible with 4Ω and 8Ω loudspeakers, ensuring broad compatibility. The low-impedance subwoofer output is directly linked to the pre-amplifier stage, offering reliable subwoofer performance without compromising overall sound quality.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003eThe Listening Room Experience\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003eAt The Listening Room, we take pride in offering more than just high-fidelity audio equipment. We provide expert advice, personalized service, and a commitment to helping you find the perfect sound system for your space. From delivery to custom setup, our goal is to ensure that every piece of equipment you purchase performs at its absolute best in your environment. Trust us to be your partners in the pursuit of exceptional sound.\u003cb id=\"docs-internal-guid-3f2b8644-7fff-75e3-a0e5-a732b8f69e3a\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003eSpecifications\u003c\/h5\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual mono Stereo Integrated Valve Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Stage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esingle ended parallel ultralinear A class\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 line, 1 tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e47 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 tape, 1 subwoofer, loudspeakers bi-wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 – 8 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeedback factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 – 30000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValves\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 x 6550\/KT88, 2 x ECC82, 2 x ECC83\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRemote Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIR inputs and volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimension\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e44 x 42 x 21 cm.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55 Ibs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Unison Research","offers":[{"title":"Default Title","offer_id":67848938160497,"sku":"URSINFONIA","price":5367.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/5215\/1921\/files\/Sinfonia-mahogany-1.jpg?v=1792519750","url":"https:\/\/sliyden.store\/products\/unison-research-sinfonia-stereo-tube-integrated-amplifier","provider":"sliyden.store","version":"1.0","type":"link"}