The Stax SRA-12S is an integrated earspeaker amplifier and pre-amplifier designed specifically for use with electrostatic headphones. Manufactured in the 1970s, it employs a unique circuitry that allows it to drive Stax electrostatic headphones effectively. The SRA-12S is noted for its warmer sound signature, which contrasts with some more modern electrostatic designs that tend to emphasize speed and detail. This vintage model features thicker diaphragms that can provide a more robust sound experience. It has made a positive impression among users for its capability to handle jazz and chamber music, though it may be less suited for electric genres. The SRA-12S is frequently praised for the synergy it creates when matched with older Stax models, such as the SR-3, New SR-3, and SR-5 headphones.
