Behringer 921A Oscillator Driver Module for Eurorack

The first System 55, 35 and 15 synth modules came out in the early 70s and tended to be extremely expensive. They were mainly all discrete transistor designs as op-amps at the time were very high cost.

The discrete circuitry gave the modules a very distinctive sound and were used by artists like Keith Emerson, Stevie Wonder, Tangerine Dream and so many more, giving us some of the greatest records we’ve ever heard.

Modular synths were a landmark development in electronic music and today, it’s about to get better.

Features

• Controls up to 12 parallel 921B OSCILLATOR modules
• Authentic reproduction of the circuitry from the "Modular 55 & 35" Series
• Artist roster includes world''s most famous pop, rock and jazz musicians
• 2 summed CV inputs for frequency control and 2 summed CV inputs for PWM
• High current outputs for frequency and pulse width to drive multiple 921B modules
• Switchable semitone/octave selector and manual pulse width control
• Eurorack specs: 8 HP, 15 mA +12 V, 15 mA -12 V
• 3-Year Warranty Program*
• Designed and engineered in the U.K.