{"product_id":"wo-1","title":"WO-1","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eA highly unusual high-end preamplifier built around a resistance-free signal path...\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIntroducing the \u003c\/span\u003eMiyajima WO-1 \u003cb\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/b\u003e—\u003cb\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/b\u003e\u003cspan\u003eThe WO-1 is Miyajima’s high-end preamplifier, developed around the idea that the music signal should avoid resistance as far as possible. Rather than using a conventional resistive volume control, the WO-1 adjusts volume by changing the gain of the amplifier itself. Miyajima say this concept was first completed in 1999 and further improved by 2014.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe phono equaliser section uses power tubes, offers large allowable input and low impedance, and is described by Miyajima as amplifying without distortion and without relying on negative feedback. The front-panel meter is used to manage precise operation of the relevant vacuum tube stage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e—\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eSpecs\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003eHigh-end preamplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eVolume Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003eGain control rather than resistive volume attenuation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003ePhono Permitted Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003e1,800 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003e1,900 ohms (plate follower)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eAmplification Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003e0 times to about 45 times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eEqualizer Tubes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003eEF86 and 6BX7-1\/2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eVolume Circuit Tubes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003e12AU7 and 6SN7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eOutput Circuit Tube\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003e6BX7-1\/2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003eLarge power transformer and four choke transformers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.6%;\"\u003e\u003cstrong\u003eMeter Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 54.5%;\"\u003eMonitors precise operation of the gain-control tube stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"simco-audio","offers":[{"title":"Default Title","offer_id":44506202013831,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/4886\/8487\/files\/WO1.jpg?v=1776715860","url":"https:\/\/simcoaudio.com\/products\/wo-1","provider":"simco-audio","version":"1.0","type":"link"}