Sequential Pro 3 Mono/Paraphonic Synthesizer Keyboard

Current price: Current price: $1,999.00


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Additional Bundles
Sequential 37-Key Hybrid Keyboard Synthesizer with 16-Track Sequencer, Extensive CV/Gate Connectivity and Filters Based on Sequential Prophet-6, Sequential OB-6 and Moog Ladder Filter
Bonus Item

Sequential's Pro 1 and Pro 2 mono synths achieved nearly legendary status in their time, so it was only natural that they build on their strengths with an even more worthy successor. Enter Sequential Pro 3, a 2-VCO + wavetable mono/paraphonic synth and a new benchmark for raw sonic power and unrivaled versatility.

closeup of Sequential Pro 3 rear panel focusing on logo

The power of 3
Pro 3 boasts 3 oscillators, 3 vintage filters, 3 LFOs, 4 loopable envelopes, a massive 32-slot mod matrix and a 16×16×4 sequencer. Throw in dual digital effects and 4 control voltage ins and outs and you've got a hugely powerful instrument that's as exciting to program as it is to play.

detail image of Sequential Pro 3 top panel showing oscillator controls

A next-generation classic
Pro 3 is a hybrid of solid, old school analog synthesis paired with versatile digital technology. Its 2 voltage-controlled oscillators provide warmth and presence, while its 3rd wavetable oscillator provides digital edge and grit. With 32 tables of 16 waves each and wave morphing, the tonal possibilities are immense. Tuned feedback with grunge and analog distortion deliver industrial-grade nastiness on demand.

detail image of Sequential Pro 3 top panel showing oscillator controls
logos for Sequential Prophet-6 and Sequential OB-6

Three filters based on vintage designs
At the heart of Pro 3's ballsy sound are its vintage-style filters. Filter 1 is a 4-pole lowpass 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.

detail image of Sequential Pro 3 top panel showing sequencer controls

Expressive sequencing
Possibly 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 132-destination modulation matrix.

detail image of Sequential Pro 3 top panel showing sequencer controls
detail image of Sequential Pro 3 rear panel showing CV/gate inputs and outputs

Plays well with modulars
Pro 3's flexible architecture opens the door not only to processing external audio, but also to interfacing with modular synths through its 4 rear-panel control voltage inputs/outputs and a dedicated gate output. Control voltages can be assigned and routed from within the modulation matrix and can run at audio rates for extreme modulation effects. Some of the many parameters that can be sent to the CV outputs include oscillators, LFOs, envelopes and sequencer tracks, allowing Pro 3 to become the central hub of a modular or multi-synth setup.

detail image of Sequential Pro 3 top panel showing sequencer controls

Effects, envelopes, LFOs, an arpeggiator and extreme modulation
Pro 3's effects section provides delays, reverbs, time-domain effects such as chorus/phasing/flanging and more. There are 4 loopable 5-stage envelope generators, 3 syncable LFOs with slew and phase offset, a full-featured arpeggiator and a 32-slot modulation matrix with dozens of modulation sources and over 100 destinations.

detail image of Sequential Pro 3 top panel showing sequencer controls
detail image of Sequential Pro 3 top panel showing button to engage paraphonic mode

Monophonic and paraphonic operation
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, mind-blowingly expressive.

detail image of Sequential Pro 3 pitch bend, mod wheel and touch slider controls

Put all of this sonic power in a 3-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.

detail image of Sequential Pro 3 pitch bend, mod wheel and touch slider controls
More Information
MPN SEQ-3400
Manufacturer Sequential
Condition New
Included from Manufacturer Power cord
Analog/Digital Hybrid
Number of Keys 37
Weighted Keys Semi-Weighted
Key Action Premium semi-weighted Fatar keybed with velocity and aftertouch
Aftertouch Yes
Programs/Presets 512 user programs
512 factory programs
Playlist mode allows creation of set lists
Voices of Polyphony 3-voice paraphonic mode with individually-gated envelopes per oscillator
Oscillators per Voice 3
Effects Tuned feedback with 'grunge' for extra-aggressive tonal destruction
Programmable analog distortion
Dual digital effects engines including super plate reverb, stereo delay, BBD delay, chorus, flanger, phaser, ring mod, rotary speaker and more
Sequencer `
Arpeggiator Yes
MIDI In, Out, Thru, USB
USB Port (to Host) MIDI
Audio Inputs 1/4" mono external audio input
Audio Outputs Dual 1/4" stereo main output
1/4" stereo headphone output
Control Connections 1/4" sustain/footswitch input
1/4" expression pedal input
(4) 1/8" CV inputs with -10V to +10V voltage range
(4) 1/8" CV outputs with -10V to +10V voltage range
(1) 1/8" gate output
Onboard Controllers Backlit pitch bend wheel
Backlit modulation wheel
Position-sensitive latchable touch slider
Width 26.5"
Depth 13"
Height 3.5"
Product Weight 16 lb

Dave Smith Instruments Limited Warranty

Dave Smith Instruments warrants that its products will be free from defects in materials and/or workmanship for one (1) year from the date of purchase.

Please register your product online at at the Dave Smith Instruments website to establish the date of purchase. This is not a requirement for warranty service, but it will help expedite the warranty service process.

Please contact a Dave Smith Instruments support representative to determine the best course of action for getting your product repaired. For your own protection, please do not return any product to Dave Smith Instruments without a return authorization (RA) number.

If you need to return your instrument for repair, you are responsible for getting it to Dave Smith Instruments. It is highly recommended that you insure your shipment and pack it in the original packaging. Damage resulting from shipping a product with insufficient packaging is not covered by this warranty.

  • Ground shipping is FREE for all orders $99 and up.
  • Our central, midwest location ensures fast delivery times.
  • See below for transit day estimates. Please note, these are estimates and are not guaranteed.

Generally, package estimated transit days are as follows:

  • Upper Midwest: 1-3 days
  • Central US, South East US, and East Coast: 2-4 days
  • West Central US: 3-5 days
  • West Coast: 4-6 days
  • Alaska & Hawaii: 7+ days
All transit times are based in business days. Please allow 7-10 business days for most freight shipments. Business days are Monday through Friday and do not include public holidays and weekends (Saturday/Sunday.) For questions regarding estimates to your specific location, please contact us at [email protected] or 800-783-3368.