Vintage Stax SRA-125 exotic integrated preamplifier combination
Vintage Stax SRA-125 exotic integrated preamplifier combination The Stax SRA-12S is an exotic integrated preamplifier combined with a dedicated Stax headphone amplifier. 1975 It runs pure class-A. It is DC-coupled, uses FETs in the first amplification stage, and four 2SC1167 bipolar transistors in the final stage. Stax advertised this as all-FET In addition to the high-voltage bias and audio output specific to Stax electrostatic headphones, an unusual feature is a switchable 20 dB Intermediate