{"product_id":"i55","title":"I55","description":"\u003ch2\u003eAudio Research I\/55 – Tube Integrated Amplifier, Essential Approach\u003c\/h2\u003e\n\n\u003cp\u003e\nAt Son Ultime, the Audio Research I\/55 represents the very essence of tube amplification:\na simplified architecture, focused on musicality, allowing access to the\nAudio Research signature in a more direct and accessible configuration.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDesigned as a more compact and streamlined version of the I\/70, the I\/55 prioritizes coherence,\nfluidity, and ease of integration, while retaining the fundamentals\nthat define the Audio Research approach.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eA Simplified Approach to Tube Amplification\u003c\/h2\u003e\n\n\u003cp\u003e\nThe I\/55 adopts a deliberately more direct architecture,\nreducing complexity to favor musicality and stability.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eOptimized tube architecture\u003c\/li\u003e\n\u003cli\u003eClass AB operation\u003c\/li\u003e\n\u003cli\u003eKT88 output tubes\u003c\/li\u003e\n\u003cli\u003eSimplified signal path\u003c\/li\u003e\n\u003cli\u003eCompact integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis approach results in a natural and fluid sound reproduction,\nparticularly suited to coherent and well-balanced systems.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eObserved Sonic Behavior at Son Ultime\u003c\/h2\u003e\n\n\u003cp\u003e\nIn our systems, the I\/55 stands out for an engaging musical presentation,\nwith an emphasis on coherence and fluidity.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eWarm and natural harmonic texture\u003c\/li\u003e\n\u003cli\u003eStable and well-structured soundstage\u003c\/li\u003e\n\u003cli\u003eControlled bass in appropriate configurations\u003c\/li\u003e\n\u003cli\u003eExcellent musicality at moderate volume\u003c\/li\u003e\n\u003cli\u003eVery low listening fatigue\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nIt is a particularly interesting solution for systems\nwhere musicality takes precedence over brute power.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eComparison with the Audio Research I\/70\u003c\/h2\u003e\n\n\u003cp\u003e\nThe I\/55 and I\/70 share a common philosophy but address different needs.\n\u003c\/p\u003e\n\n\u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/55\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/70\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePositioning\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAudio Research Entry-Level\u003c\/td\u003e\n\u003ctd\u003eHigh-Performance Integrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMore Moderate\u003c\/td\u003e\n\u003ctd\u003eHigher (~70W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKT88\u003c\/td\u003e\n\u003ctd\u003eKT150\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDynamic Capability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOptimized for Coherent Systems\u003c\/td\u003e\n\u003ctd\u003eSuited for More Demanding Loads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBass Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eSuperior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScalability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003ctd\u003eMore Flexible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eObjective\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSimplicity and Musicality\u003c\/td\u003e\n\u003ctd\u003ePerformance and Versatility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\nThe I\/55 should be seen as a more direct and accessible version,\nwhile the I\/70 is aimed at more ambitious systems requiring\ngreater control and dynamic headroom.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTube Integrated Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClass\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass AB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Tubes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKT88\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 50 watts per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAmplification + Preamplification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePositioning\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAccessible Audio Research Integrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSystem Integration According to the Son Ultime Approach\u003c\/h2\u003e\n\n\u003cp\u003e\nThe I\/55 performs particularly well in coherent systems\nthat are well-matched to its power output.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eHifiRose Digital Sources\u003c\/li\u003e\n\u003cli\u003eMSB Technology DAC (Discrete)\u003c\/li\u003e\n\u003cli\u003eSuitable Bowers \u0026amp; Wilkins Speakers\u003c\/li\u003e\n\u003cli\u003eAcora Acoustics Speakers\u003c\/li\u003e\n\u003cli\u003eREL Acoustics Subwoofers for Bass Extension\u003c\/li\u003e\n\u003cli\u003eShunyata Research Cabling and Power Supply\u003c\/li\u003e\n\u003cli\u003eSilent Angel Network Infrastructure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nSpeaker selection and the listening environment are key factors\nto fully exploit its capabilities.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSon Ultime Approach\u003c\/h2\u003e\n\n\u003cp\u003e\nAt Son Ultime, the I\/55 is used as a coherent solution\nto build a musical and balanced system.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWe analyze:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSpeaker efficiency and load\u003c\/li\u003e\n\u003cli\u003eRoom size\u003c\/li\u003e\n\u003cli\u003eSystem structure\u003c\/li\u003e\n\u003cli\u003eElectrical power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis approach allows the I\/55 to be optimally positioned\nand avoids any limitations related to its format.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"font-size:18px; font-weight:bold;\"\u003e\nSchedule a listening session at Son Ultime to compare the I\/55 and I\/70\nand determine the most suitable configuration for your system.\n\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":46339198550318,"sku":"","price":10000.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0795\/3167\/1854\/files\/w_1_0006479_i50.jpg?v=1691736722","url":"https:\/\/sonultime.com\/en\/products\/i55","provider":"Son Ultime Inc","version":"1.0","type":"link"}