Behringer PRO-1 Desktop Analog Synthesizer

Behringer PRO-1 Overview

The Behringer PRO-1 is a recreation of the Sequential Circuits Pro-One, a monophonic analog synth originally released in 1981 and whose sound has been gracing records by Thompson Twins, the Prodigy, Depeche Mode, Vince Clarke, New Order, Prince, Soft Cell, and a host of others. An ultra-affordable desktop homage to that iconic synthesizer with all the features of the original and then some, the PRO-1 lets you conjure up a wide range of synthesizer sounds including basses, leads, arpeggios, drones, and sound effects. With its pure-analog signal path and dual authentic VCOs with 3 selectable waveforms, plus extremely flexible VCF and VCA filters, the PRO-1 is sure to become one of your favorite go-to synthesizers.

True to the Original

• Great care has been taken in engineering the PRO-1, including the true-to-the-original analog circuitry and legendary VCO, VCF, and VCA designs, all of which combine to make it easy to recreate and perform the classic sound.
• This highly focused attention to detail is what gives the PRO-1 its ultraflexible sound-shaping capability, which covers everything from superfat bass and lead tones, to stunning effects, and all the way out to the otherworldly sounds of your imagination.

Authentic 3340 Oscillators, Versatile VCF, and Powerful LFO

• The PRO-1’s 3340 Voltage Controlled Oscillators (VCOs) provide your choice of up to 3 simultaneous waveforms (Oscillator A—Sawtooth and Pulse, and Oscillator B—Sawtooth, Triangle, and Pulse), with a selectable range of 4 octaves.
• The VCOs can be modulated via the envelope or the low-frequency oscillator (LFO). Performance is enhanced by the mixer section, which balances the levels of the internal VCOs and the noise generator. This amazing flexibility gives you the tools to be your creative best.
• The very heart of PRO-1’s sound is its classic 4-pole filter—which lets you freely experiment with the cutoff frequency, resonance, envelope, and keyboard amounts—and full complement of ADSR (attack, decay, sustain, release) controls to dial in the perfect sound.
• The analog low-frequency oscillator (LFO) features your choice of sawtooth, triangle, and pulse waveforms, with a sweepable frequency range from 0.1 to 30 Hz. Additionally, the onboard Modulation matrix lets you set the amount of filter Envelope, Oscillator B, and LFO modulation applied to the signal. You can even modulate the pulse wave via the LFO, envelope, or manually, for sounds ranging from mild to wild.
• Two separate envelope generators are onboard for modulating the VCF and VCA.

Onboard Sequencer and Arpeggiator

• Dual 64-note sequencers allow you to record and playback your choice of 2 unique patterns, which can be played either in Keyboard mode—where you create and store the pattern, or Step mode—which allows you to interact while composing the pattern.
• The onboard Arpeggiator switch features 3 positions, Up (ascending), Down (descending), and Off.

16-Note Poly Chain Ready

While it is a monophonic instrument (one note at a time), the PRO-1's 16-note Poly Chain function lets you combine multiple synthesizers for up to 16-voice polyphony, and it provides vastly improved reliability and stability over its 1970s and '80s predecessors.

Eurorack Ready

Designed to handle the rigors of life on the road or in the studio, your PRO-1 can easily be transferred into a standard Eurorack case for the perfect integration into your existing system.

At a Glance

• Amazing analog synthesizer with dual VCO design allows for amazingly fat music creation
• Authentic reproduction of original circuitry with legendary 3340 and 3320 semiconductors
• Pure analog signal path based on authentic VCO, VCF, and VCA designs
• 3 simultaneous oscillator shapes (OSC A: Saw/Pulse, OSC B: Saw/Triangle/Pulse waveforms)
• Classic 4-pole filter design with self-resonance capability
• Powerful modulation matrix for 2 modulation buses for flexible music creation
• Dedicated and analog LFO with simultaneous sawtooth, triangle, and square oscillator shapes
• 2 envelope generators for modulation of VCF and VCA
• Easy-to-use 64-note dual sequencer (LFO clock serves as master clock)
• Arpeggiator with 3 patterns for great sound effects
• 16-voice Poly Chain allows combining multiple synthesizers for up to 16 voice polyphony
• Complete Eurorack solution main module can be transferred to a standard Eurorack case
• 56 controls give you direct and real-time access to all important parameters
• Audio input for processing external sound sources for enhanced creativity
• External control inputs and outputs (gate, filter, etc.)
• Comprehensive USB/MIDI implementation with MIDI channel and voice-priority selection