The CP-251 Moogerfooger Control Processor from Moog is designed to provide a variety of control signals for any voltage-controlled gear. It features a dual waveform LFO, a noise generator, a sample and hold circuit, a lag processor, 2 attenuators, a 4-way mult, and a CV mixer. Connecting the CP-251 to a CV or gate input on your synth allows you to mix and modify the control voltage based effects for a wide variety of sonic possibilities.
Four Input Mixer: Enables you to combine control signals to create complex effects
Lag Processor: Reshapes control signals by slowing down abrupt changes, used to produce glides and swoops
Low Frequency Oscillator (LFO): Makes periodic control signals over the range of one cycle every 33 seconds to 50 cycles per second. The LFO is itself voltage-controlled so you can vary its rate with an expression pedal or other control signal to create effects such as vibrato, warbles, and sirens
Two Attenuators: To reduce the strength of control signals, enabling you to adjust the strength of an effect
Four-Way Multiple: Enables you to send one control signal to as many as three destinations
Noise Source: Provides pure noise for use as an audio or control signal
Sample and Hold: Produces stepwise control signals by sampling the voltage of any signal at rate of the LFO to produce classic sample-and-hold effects. This circuit also has a second output which is a smoothed version of the stepwise output