The Teisco SX-400 is a vintage synthesizer that encapsulates the essence of electronic sound from the 1970s. Manufactured by Teisco, this polyphonic analog keyboard offers a rich sonic palette with its multiple oscillators and distinctive filters. The SX-400 is appreciated for its distinctive retro aesthetic, featuring intuitive controls that allow musicians to sculpt unique sounds. Despite being produced in limited quantities, the Teisco SX-400 remains sought after by collectors for its vintage sonic character and its role in the history of synthesizers.