{"product_id":"unison-research-unico-90-hybrid-integrated-amplifier","title":"Unison Research Unico 90 Integrated Amplifier","description":"\u003cp\u003e\u003cspan\u003eUnico 90 is a class AB hybrid integrated amplifier with zero feedback, as the most precious valve amplifiers uses only two stages. The heart of the Unico 90 circuit is found in its hybrid structure. All of the gain, and subsequently the “character” of the amp, is determined by the only tube stage made with ECC83 and ECC 81in particular multiple-parallel-totem-pole.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTech Spechs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOutput power: 100+100 W  RMS su 8Ω \/ 160+160 W  RMS su 4Ω\u003c\/li\u003e\n\u003cli\u003eFrequency response: -1dB @ 12Hz e 45kHz -3 dB\u003c\/li\u003e\n\u003cli\u003eInput impedance: 21Kohm \/\/ 300pF\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 860mV RMS\u003c\/li\u003e\n\u003cli\u003eInput stage: Pure A class, double triode  totem pole ECC83  and  parallel totem pole ECC81 This single stage due to the particular circuitry is able to amplify the input signal and drive  directly the power stage.\u003c\/li\u003e\n\u003cli\u003eOutput stage: Class AB thermostable, complementary Hexfet (3 pairs for channel)\u003c\/li\u003e\n\u003cli\u003eNumber of stage: 2, This amplifier due to the particular circuitry is realized by only two stages: input stage and output stage, and use only local feedback\u003c\/li\u003e\n\u003cli\u003eInput: 6 line (3 unbalanced, 2 balanced, 1 “bypass” unbalanced)\u003c\/li\u003e\n\u003cli\u003eLine Outputs: 1 tape, 1 sub  (volume controlled)\u003c\/li\u003e\n\u003cli\u003eOutput connectors: 4 + 4  bi-wiring\u003c\/li\u003e\n\u003cli\u003eGlobal Feedback factor: 0 dB\u003c\/li\u003e\n\u003cli\u003eTHD: \u0026lt; 0.15% @ 1kHz, 1 W\u003cbr\u003e\u0026lt; 0.5% @ 1kHz, 10 W\u003c\/li\u003e\n\u003cli\u003eOutput resistance: \u0026lt;0.4 ohm, resistive on all audio frequencies\u003c\/li\u003e\n\u003cli\u003ePower Consumption: 550 W (at max power on 8 ohm)\u003c\/li\u003e\n\u003cli\u003eDimensions: 43.5cm x 44 cm x 18 cm h\u003c\/li\u003e\n\u003cli\u003eNet weight: 20 kg\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unison Research","offers":[{"title":"Black","offer_id":48574881235251,"sku":null,"price":5999.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":48574881268019,"sku":null,"price":5999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/UnisonResearchUnico90IntegratedAmplifier.png?v=1773237105","url":"https:\/\/vinylsound.com\/products\/unison-research-unico-90-hybrid-integrated-amplifier","provider":"Vinyl Sound USA","version":"1.0","type":"link"}