The Stax SR-2 is an electrostatic headphone model that is part of the Stax lineup, which is known for its innovative design and high-quality audio performance. The SR-2 features a lightweight construction and an adjustable headband for a comfortable listening experience. It utilizes electrostatic transducers, which provide improved clarity and detail in sound reproduction compared to dynamic drivers. The headphones are typically paired with Stax dedicated energizers, enabling them to perform at their best by providing the required high voltage for optimal sound quality. Specifications include a frequency response range typically spanning from around 10 Hz to 30 kHz, an impedance of about 145 kΩ, and a sound pressure level of approximately 100 dB. The electrostatic nature of the SR-2 contributes to a broad soundstage and excellent transient response, making them suitable for critical listening. They are designed primarily for home use and offer a unique listening experience for audiophiles who appreciate accurate sound reproduction.