{"product_id":"unison-research-sinfonia","title":"Unison Research Sinfonia","description":"\u003cstrong\u003eThe Unison Research Sinfonia is a high-fidelity integrated valve amplifier that aims to deliver the purest sound experience through its Class-A design. With meticulous attention to the physics of audio reproduction, it sets a new standard in acoustic integrity.\u003c\/strong\u003e\u003cbr\u003e\u003chr\u003e\u003cbr\u003eThe Unison Research Sinfonia utilizes a dual mono configuration, ensuring that each channel operates independently to eliminate crosstalk and interference, thereby delivering a clearer and more accurate sound. Its Class-A output stage, featuring KT88 tubes in parallel single-ended ultra-linear mode, allows for optimal linearity and minimal distortion, which is crucial for high fidelity. The amplifier incorporates rigorously selected and matched tubes, controlling the KT88 bias in real time to mitigate drift over time, which is essential for consistent sound quality. Additionally, the use of toroidal transformers in its power supply minimizes magnetic flux dispersion, contributing to improved transient response and overall efficiency. The unique design where external wooden components dampen resonance further enhances the amplifier's performance by reducing unwanted microphony effects.\u003cbr\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Mono Configuration:\u003c\/strong\u003e Each channel has its own dedicated power section, which reduces interference and enhances sound clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass-A Output Stage:\u003c\/strong\u003e Operates in single-ended ultra-linear mode, providing excellent linearity and minimizing harmonic distortions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKT88 Tubes:\u003c\/strong\u003e Selected for superior performance and matched for consistency, ensuring a high level of reliability and sound quality over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToroidal Transformers:\u003c\/strong\u003e Designed for low magnetic flux dispersion, improving efficiency and dynamic response in audio output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time Bias Compensation:\u003c\/strong\u003e Maintains optimal operation of tubes, ensuring sustained sound performance even after prolonged use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWooden Damping Structures:\u003c\/strong\u003e Reduces resonance, minimizing microphony effects from the vacuum tubes to deliver a purer audio signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eALPS RK27 Potentiometer:\u003c\/strong\u003e Provides precise analog volume control, enhancing user experience and maintaining audio integrity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eType: Dual Mono\/Stereo Integrated Valve Amplifier\u003c\/li\u003e\n\u003cli\u003eOutput Stage: Single Ended Parallel Ultralinear Class-A\u003c\/li\u003e\n\u003cli\u003eOutput Power: 25W\u003c\/li\u003e\n\u003cli\u003eInputs: 4 Line, 1 Tape\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 47 kOhm\u003c\/li\u003e\n\u003cli\u003eOutputs: 1 Tape, 1 Subwoofer, Loudspeakers Bi-Wiring\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 4 – 8 Ohm\u003c\/li\u003e\n\u003cli\u003eFeedback Factor: 14dB\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 20 – 30000 Hz\u003c\/li\u003e\n\u003cli\u003eValves: 4 x 6550\/KT88, 2 x ECC82, 2 x ECC83\u003c\/li\u003e\n\u003cli\u003eRemote Control: IR Inputs and Volume\u003c\/li\u003e\n\u003cli\u003ePower Consumption: 500W Max\u003c\/li\u003e\n\u003cli\u003eDimensions: 44 x 42 x 21 cm\u003c\/li\u003e\n\u003cli\u003eNet Weight: 55 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unison Research","offers":[{"title":"Cherry","offer_id":43088231039089,"sku":"URSINFONIACH","price":6999.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43088231071857,"sku":"URSINFONIAB","price":6999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/0571\/7617\/files\/sinfoniaCherry.jpg?v=1774188138","url":"https:\/\/shopodsy.com\/products\/unison-research-sinfonia","provider":"ODSY","version":"1.0","type":"link"}