Sequential Pro 3 Multi-Filter Mono/Paraphonic Synth
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A Three-Generation Legacy
The Sequential Pro 1 and Pro 2 mono synths achieved nearly legendary status in their time. So it was only natural that we build on their strengths with an even more worthy successor. Enter the Pro 3, Sequential’s 2-VCO + wavetable mono/paraphonic synth — a new benchmark for raw sonic power and unrivalled versatility.
The Pro 3 boasts three oscillators, three vintage filters, three LFOs, four loopable envelopes, a massive 32-slot mod matrix, and a 16 x 16 x 4 sequencer. Throw in dual digital effects and four control voltage ins and outs, and you’ve got a hugely powerful instrument that’s as exciting to program as it is to play.
A Next-Generation Classic
The Pro 3 is a hybrid of solid, old-school analog synthesis paired with versatile digital technology. Its two voltage controlled oscillators provide warmth and presence while its third wavetable oscillator provides digital edge and grit. With 32 tables of 16 waves each and wave morphing, tonal possibilities are immense. Tuned feedback with grunge, and analog distortion deliver industrial-grade nastiness on demand.
Three Filters Based on Vintage Designs
At the heart of the Pro 3’s ballsy sound are its vintage-style filters. Filter 1 is a 4-pole low-pass design based on the Prophet-6 filter. Filter 2 is a classic transistor ladder filter with optional resonance compensation to preserve its low-end punch. Filter 3 is a classic 2-pole, state-variable design based on the OB-6 filter that can be continuously varied between low-pass, notch, and high-pass operation, with an optional band-pass mode. An additional Drive control provides still more punch when you really want to get down and dirty.
Possibly the Pro 3’s most powerful performance tool is its sequencer. With 16 tracks, 16 steps, and 4 phrases, it features both real-time and step input, ratcheting, variable gate and sequence lengths, multiple playback modes, and paraphonic operation. It also syncs to MIDI clock and external audio input, and inputs/outputs control voltages. In addition to notes, sequence tracks can control any parameter in the 171-destination modulation matrix.
Effects, Envelopes, LFOs, an Arpeggiator, and Extreme Modulation
The Pro 3’s Effects section provides delays, reverbs, time-domain effects such as chorus/phasing/flanging and more. There are four loopable five-stage envelope generators, three syncable LFOs with slew and phase offset, a full-featured arpeggiator, and a 32-slot modulation matrix with dozens of modulation sources and over a hundred destinations.
Monophonic and Paraphonic Operation
The Pro 3 was designed to be a super-powerful monosynth, but it is also a versatile 3-voice paraphonic synth. This makes playing 3-note chords not only possible, but with creative use of effects and some per-oscillator modulation, very expressive.
Put all of this sonic power in a three-octave, semi-weighted keyboard with velocity and channel aftertouch, add backlit pitch and mod wheels and a location-sensitive touch slider, and you’ve got one of the most inspiring synths ever made.
PRO 3 SPECIFICATIONS
Two analog, voltage-controlled oscillators
One DSP-based digital oscillator
Analog oscillators produce three classic wave shapes: (triangle, saw, pulse) with variable shape modulation/pulse width on each
Digital oscillator produce 32 digital wavetables of 16 waves each with wave morphing, plus classic wave shapes (sine, triangle, saw, variable-width pulse) and super saw
Digital oscillator 3 can function as an LFO for complex wavetable-based modulation
White noise generator
Hard sync, per-oscillator Glide, Oscillator Slop
3-VOICE PARAPHONIC PLAYABILITY
3-voice paraphonic mode with individually-gated envelopes per oscillator
Three classic filter types
Filter 1 is a 4-pole, 24 dB per-octave, Prophet-6™ low-pass filter
Filter 2 is a classic, 4-pole, 24 dB per-octave, transistor ladder filter with optional resonance compensation
Filter 3 is a 2-pole, 12 db per-octave, OB-6™ state-variable filter. It can be continuously varied between low-pass, notch, and high-pass operation, with an optional band-pass mode.
Three syncable LFOs with phase offset and slew per LFO
Five waveshapes: triangle, saw, reverse saw, square, and S&H
Four ADSR envelopes with delay (Filter, VCA, and two Auxiliary envelopes)
Envelopes freely assignable to multiple modulation destinations
All envelopes can repeat/loop
Dual digital effects
Stereo delay, BBD delay, chorus, flanger, phaser, ring mod, vintage rotating speaker, distortion, high-pass filter, super plate reverb
32-SLOT MODULATION MATRIX
32 slot modulation matrix with over 46 mod sources and over 171 mod destinations
Modulation assignment buttons enable quick and easy modulation routing
Mod Matrix runs at audio rates
Advanced sequencer with three modes: normal, gated, and trigger
16 tracks and 4 linkable 16-step phrases
Per-step ratcheting, duration, and velocity
Multiple playback modes: forward, reverse, forward/reverse, random
Supports real-time/step input, rests, and variable-length sequences
Syncs to MIDI clock and external audio and CV input
Sequences freely assignable to any modulation destination
Sophisticated arpeggiator with up, down, up+down, random, assign modes
Syncs to MIDI clock and external audio and CV inputs
Runs concurrent with Sequencer for arpeggiated patterns with parameter automation
Over 60 knobs and 70 buttons enable deep, comprehensive editing with minimal menu diving
Backlit pitch and mod wheels are easily visible in low-light situations and have a smooth, precise response.
Independently adjustable upper and lower pitch wheel range
Position-sensitive latchable touch slider for enhanced interactivity and control
Full-sized, three-octave, semi-weighted keyboard with velocity and aftertouch
512 user and 512 factory programs
Playlist mode for generating easily accessible set lists of your favorite programs
1 MIDI In, 1 MIDI Out, and 1 MIDI Thru/Out 2 port
USB port for bidirectional MIDI communication
4 CV inputs (4 x 1/8″ jack) with -10v to +10v voltage range
4 CV outputs (4 x 1/8″ jack) with -10v to +10v voltage range
1 Gate Out (1/8″ jack)
1 Sustain/footswitch input
1 Expression pedal input
1 External audio input (1/4″ phone jack)
Main stereo output (2 x 1/4″ phone jack)
Headphone out (stereo 1/4″ phone jack)
1 universal IEC AC power inlet for internal power supply
Operates worldwide on voltages between 100-240v, 50-60Hz, 30 watts maximum power consumption
Premium, 3-octave, semi-weighted Fatar keyboard
26.5″ L x 13″ W x 3.5″ H (67.3 cm x 33 cm x 8.9 cm)