Original Sams Photofact service manual folder for the Regency HF-80 tube audio amplifier. These Photofact folders were produced by Howard W. Sams & Co. and used by professional electronics technicians.
Original Sams Photofact service manual folder for the Regency HF-80 tube audio amplifier. These Photofact folders were produced by Howard W. Sams & Co. and used by professional electronics technicians.