Despite all the fanfare over the recent resurgence of vinyl, veteran audiophiles have long stood by analog audio and the vacuum-tube-powered equipment that was popular in the 1950s and ’60s. Hidden in the suburbs of Chicago is an artisan company called Decware that produces vacuum-tube audio gear to a level of quality that a Swiss watchmaker would be proud of. Eschewing the current steampunk rage, Decware amplifiers possess a timeless, elegant simplicity and functionality. The company’s owner, Steve Deckert, d…