TAS Hafler PH60

As every audiophile knows, David Hafler is a hi-fi legend. Among other advances, he's known for his work, along with Herbert Keroes, on Blumlein’s ultra-linear circuit. In 1954 he founded Dynaco and soon became a household name. The Dynaco st-70 one of the best-selling amplifiers of all time (it sold more than 350,000 units in its lifespan)—and considered one of the greatest classic amps—needs no introduction.