US legend Audio Research was one of very few to stick loyally with valves – or vacuum tubes, as the Americans' prefer to call them – when the rest of the Hi-Fi industry was rushing to embrace solid-state electronics. It can also fairly be called the father of US 'high-end', setting just such an agenda through the early 1970s with legendary 'super amps' like the 150-watt per channel all-valve D150. Hindsight shows that yesterday's heretic has become today's prophet and now that valve electronics are making a determined comeback, Audio Research holds the high 'I told you so' ground.



Link: TechRadar