Toward the end of the tube era, this output stage design would be typical on high-end quipment.
About This Site
This is the website of the Pittsburgh Antique Radio Society (PARS). The Society was formed in 1986 around a mission of preserving the early broadcast radio history, artifacts and even structures of Pittsburgh, radio station KDKA and Westinghouse Corporation. Over 30 years, the club has formed a strong core of historians and collectors whose interests cross the entire vintage electronics field.