{"product_id":"unison-research-sh-headphone-amplifier-used","title":"Unison Research SH Headphone Amplifier (USED)","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUnit in immaculate condition with full original packaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e________________________________________________________________________________________________\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe Unison Research SH Headphone Amplifier is meticulously crafted for audiophiles seeking the ultimate personal listening experience. Blending traditional tube warmth with cutting-edge digital technology, the SH offers a unique combination of vintage sound and modern convenience. It's designed to satisfy both the seasoned listener and the modern music lover.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\" dir=\"ltr\"\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eClass A Tube Circuitry:\u003c\/strong\u003e Utilizes ECC83 and EL84 valves for a warm, detailed sound with low distortion.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eAdvanced USB DAC: \u003c\/strong\u003eFeatures a high-performance ESS Sabre DAC, supporting up to 384kHz PCM and DSD128 formats.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eDual Headphone Outputs:\u003c\/strong\u003e Two parallel outputs with a sensitivity switch to accommodate a broad range of headphone impedances.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eLow Negative Feedback Design: \u003c\/strong\u003eMaintains low distortion and consistent sound quality across the frequency spectrum.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eSuperior Build Quality:\u003c\/strong\u003e Housed in a robust, elegantly designed chassis that reflects the high standards of Unison Research.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"seo-h2\" dir=\"ltr\"\u003e\u003cspan\u003eAbout Unison Research\u003c\/span\u003e\u003c\/h2\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\u003ch2 class=\"seo-h2\" dir=\"ltr\"\u003e\u003cspan\u003eSophisticated Tube Design\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe SH employs a carefully engineered tube circuit, featuring an ECC83 valve in the input stage and an EL84 valve in the output stage, both operating in pure Class A. This configuration ensures minimal distortion and delivers a rich, coherent sound signature. The EL84 valve, in particular, is selected for its ability to drive the output transformer effectively, providing optimal electrical and sonic characteristics.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\" dir=\"ltr\"\u003e\u003cspan\u003eVersatile Connectivity\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe SH is equipped to handle a wide variety of headphones, thanks to its linear circuit and adjustable sensitivity switch. This allows users to match the output to the specific needs of their headphones, whether high or low impedance. The two parallel headphone outputs also make it easy to switch between different headphones or share the listening experience with another person.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor connectivity, the SH includes a standard unbalanced RCA input for traditional analog sources. Additionally, the integrated USB DAC supports high-resolution audio formats, ensuring that digital audio is rendered with exceptional clarity and detail. The USB DAC employs a jitter-elimination circuit and galvanic isolation, delivering a pristine signal conversion that preserves the integrity of the music.\u003c\/span\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\" dir=\"ltr\"\u003eThe Listening Room Experience\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eYour listening space is unique, and so are your needs. That's why we take the time to understand your preferences, your room acoustics, and your sonic dreams. We'll guide you through our range of hi-fi options, ensuring you find the perfect match for your space and budget. We believe in personal connections, exceptional service, and expert advice because when it comes to sound, there's no one-size-fits-all solution. Contact us to learn more.\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"seo-h2\" dir=\"ltr\"\u003e\n\u003cspan\u003eSpecifications\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eUSB DAC Specifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAsynchronous USB, compliant with USB 2.0 Audio Class\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Formats\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCM up to 384kHz, DSD up to 128x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 32 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDAC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLast-generation ESS Sabre DAC with jitter-elimination circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGalvanic Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBetween USB interface and conversion circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLow Phase Noise Clocks\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePreserves low jitter performance in the “clean” supply domain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio (SNR)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110dB @ 1kHz, “A” weighted, 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Harmonic Distortion + Noise (THD+N)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.008% @ 1kHz, -3dBFS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Output Voltage (THD 1%)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh Sensitivity: 0.5V\/150 ohm, 0.45V\/33 ohm, 0.4V\/10 ohm\u003cbr\u003eLow Sensitivity: 1.5V\/150 ohm, 1.2V\/33 ohm, 0.65V\/10 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-0.1dB @ 10Hz \/ -3dB @ 50kHz (Low Sensitivity, 33 ohm load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 kohm \/\/ 100 pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh Sensitivity: 0.67V in \/ 0.33V out (10 ohm load)\u003cbr\u003eLow Sensitivity: 0.67V in \/ 1V out (33 ohm load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Stage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePure Class A, ECC83\/12AX7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Stage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass A, 2 EL84 triode-connected valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 line RCA, 1 USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 parallel connected headphone outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeedback Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Harmonic Distortion (THD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.2% @ 1kHz, 0.5V\u003cbr\u003e\u0026lt;0.8% up to 1V (Low Sensitivity, 33 ohm load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22.5 cm x 12.6 cm x 32.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Unison Research","offers":[{"title":"Default Title","offer_id":56704831193461,"sku":null,"price":23536.0,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2222\/0805\/files\/ACAD4398-F4FE-4C79-9013-C6CD00B80ACF.jpg?v=1770313088","url":"https:\/\/www.kronosav.com\/en-mx\/products\/unison-research-sh-headphone-amplifier-used","provider":"Kronos AV","version":"1.0","type":"link"}