Stax SRM-500T Driver Unit

Stax Ltd. is a world-renowned Japanese audio manufacturer specializing in high-end electrostatic headphones and specialized driver units. The SRM-500T is a vacuum tube-based driver unit specifically designed to power Stax's 'Earspeakers.' Known for precision engineering, Stax products continue to be manufactured in Japan to maintain the rigorous standards required for electrostatic audio technology.

The brand has a storied history, having introduced the world's first electrostatic headphones in 1960. While the brand has faced various corporate transitions, it remains a leader in the audiophile market, operating under the umbrella of its current parent company while maintaining its distinct Japanese engineering identity.