Moog Moog Model 205A Taurus Bass Pedal Synthesizer

The Moog Taurus I (Model 205A), introduced in 1976, is a foot-operated analog bass synthesizer renowned for its powerful low-frequency sounds. Initially conceived as part of Moog's "Constellation" ensemble—which included the Apollo (polyphonic) and Lyra (monophonic) synthesizers—the Taurus was released as a standalone unit after the Constellation project was shelved. This instrument features a 13-note pedalboard, allowing musicians to play bass lines with their feet while performing on other instruments. The Taurus I gained prominence among progressive rock bands such as Genesis, Rush, and Yes, who utilized its deep bass capabilities to enrich their music.

The Taurus I offers three preset sounds—Bass, Tuba, and the distinctive "Taurus"—alongside one user-programmable setting. Its analog architecture includes two oscillators per voice, a 24 dB/octave low-pass filter, and an Attack/Decay envelope generator, enabling rich and dynamic bass tones. The instrument's octave switch extends its range across five octaves, providing versatility in performance. Notably, the sound-shaping controls are protected by a removable plastic cover to prevent accidental adjustments during use. The Taurus I's robust design and unique sound have cemented its status as a classic in the history of electronic musical instruments.