The Stax SRA-6S is an electrostatic headphone driver unit designed for use with Stax electrostatic headphones. It is equipped with a high-quality transformerless output stage, which allows for a direct connection to the headphones, delivering superior sound quality free from transformer artifacts. The unit features a power supply that is integrated within the chassis, providing stable power for optimal performance. The SRA-6S is built to accommodate a wide range of electrostatic headphones, offering adjustable settings for both bias voltage and volume, ensuring compatibility and personalization of listening preferences. Additionally, it incorporates various input options, including standard input jacks, which enable versatility in connecting different audio sources. The design emphasizes both aesthetics and functionality, often characterized by a sleek, minimalistic layout that synergizes with the headphones it drives. Users appreciate its capacity to produce a rich, detailed audio experience, making it a suitable choice for audiophiles seeking precision and clarity in their sound.