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Average Price: $1,919
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$500
$1501+
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Based on price data from 7 merchants for "Sequential Pro 3 37-Key 3-Voice Monophonic / Paraphonic Synthesizer". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Fusing the best of vintage and modern synthesis, the Sequential Pro 3 37-key 3-Voice Monophonic/Paraphonic Synthesizer is a powerhouse of sonic creativity. Designed to cater to both studio professionals and live performers, this hybrid synth combines the warmth of analog with the precision of digital technology. The Pro 3 boasts three dynamic oscillators: two analog VCOs for that classic warmth, and a digital wavetable oscillator that adds a gritty edge to your sound palette. Its three iconic filters—inspired by the Prophet-6, OB-6, and the classic ladder filter—offer a vast array of tonal possibilities, from smooth low-pass sweeps to resonant high-pass effects.
Whether you're crafting ethereal soundscapes or driving basslines, the Pro 3's robust modulation matrix, with 32 slots and over 170 destinations, allows for intricate sound design. The 16-track sequencer, complete with real-time and step input, ratcheting, and multiple playback modes, is a composer’s dream, enabling expressive and complex sequences. The Pro 3 is also a modular enthusiast's best friend, featuring four CV inputs and outputs, making it adaptable to any setup. With dual digital effects, programmable distortion, and a user-friendly interface packed with knobs and buttons for minimal menu diving, the Pro 3 is as exhilarating to program as it is to play.
Key Features:
- 37-key semi-weighted keyboard with velocity and channel aftertouch
- Monophonic and 3-voice paraphonic modes
- Three oscillators: two VCOs and one digital wavetable
- Three classic analog filters: Prophet-6, OB-6, and ladder filter
- 32-slot modulation matrix with 46+ modulation sources and 171+ destinations
- 16-track sequencer with real-time and step input
- Dual digital effects and programmable analog distortion
- Four CV inputs and outputs with a dedicated gate output
- Backlit pitch and mod wheels, plus a location-sensitive touch slider
- 512 factory presets and 512 user slots
Product specs
| Type | Keyboard Synthesizer with Sequencer |
| Analog/Digital | Hybrid |
| Number of Keys | 37 |
| Type of Keys | Semi-weighted, Full Size |
| Aftertouch | Yes |
| Velocity Sensitive | Yes |
| Other Controllers | Pitchbend, Mod wheel, Touch Slider |
| Polyphony | Monophonic, 3-voice Paraphonic |
| Presets | 512 x User Programs, 512 x Factory, 32-slot Modulation Matrix |
| Oscillators | 2 x Analog VCO, 1 x Digital Wavetable Oscillator |
| Waveforms | VCO: Triangle, Sawtooth, Pulse ; Digital Wavetable: 32 x Digital Wavetables of 16 Waves each, classic Wave Shapes, Super Saw |
| LFO | 3 x Syncable LFO (triangle, saw, reverse saw, square, S&H) |
| Filter | 4-pole 24dB Prophet 6 Lowpass, 4-pole 24dB Tranistor Ladder, 2-pole 12dB OB-6 State-variable |
| Envelope Generator | 4 x ADSR with Delay, Repeat/Loop |
| Effects Types | Delay, Reverb, Chorus, Flange, Phase, Distortion, Rotary Speaker |
| Arpeggiator | Up, Down, Up+Down, Random |
| Sequencer | 16-track, 4 x Linkable 16-step Phrases, 3 x Modes (normal, gated, trigger), Multiple Playback Modes |
| Audio Inputs | 1 x 1/4" |
| Audio Outputs | 2 x 1/4" (L/R) |
| Headphones | 1 x 1/4" |
| USB | 1 x Type B |
| MIDI I/O | In, 2 x Out, Thru, USB |
| Pedal Inputs | 1 x 1/4" (sustain), 1 x 1/4" (expression) |
| Other I/O | 4 x CV in, 4 x CV out, 1 x Gate out |
| Mod Matrix | 32 Slots, 46 Sources, 171 Destinations |
| Power Source | Standard IEC AC cable |
| Height | 3.5" |
| Width | 26.5" |
| Depth | 13" |
FAQs
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What type of synthesis does the Sequential Pro 3 use?
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The Sequential Pro 3 is a hybrid synthesizer, combining both analog and digital synthesis. It features two analog VCOs and one digital wavetable oscillator, providing a wide range of sound design possibilities.
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Can the Sequential Pro 3 be used for polyphonic playing?
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The Sequential Pro 3 is primarily a monophonic synthesizer but offers 3-voice paraphonic capabilities, allowing for limited polyphonic playing where up to three notes can be articulated simultaneously.
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What types of filters are available on the Sequential Pro 3?
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The Sequential Pro 3 includes three distinct filters: a 4-pole 24dB Prophet 6 lowpass, a 4-pole 24dB transistor ladder, and a 2-pole 12dB OB-6 state-variable filter, each offering unique tonal characteristics.
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Does the Sequential Pro 3 support aftertouch?
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Yes, the Sequential Pro 3 features semi-weighted keys with aftertouch, allowing for expressive playing techniques and dynamic modulation control.
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What connectivity options does the Sequential Pro 3 offer?
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The Sequential Pro 3 provides extensive connectivity, including USB, MIDI In/Out/Thru, audio inputs and outputs, pedal inputs, and CV/Gate connections, making it versatile for studio and live setups.
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What are the modulation capabilities of the Sequential Pro 3?
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The Sequential Pro 3 features a 32-slot modulation matrix with 46 sources and 171 destinations, enabling complex modulation routing and creative sound design.
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How many presets can the Sequential Pro 3 store?
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The Sequential Pro 3 can store up to 512 user programs and comes with 512 factory presets, providing a vast library of sounds and the ability to save custom patches.
Videos
The Midlife Synthesist
Sequential Pro 3 Vs Moog Subsequent 37 // What Mono Synth Should I Buy? A Real Life Comparison
Reviews
PROS
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Stunning sound quality with diverse sonic capabilities
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Intuitive and user-friendly interface for easy programming
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Impressive modulation options, including modular-level capabilities
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High-quality build with robust, solid knobs
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Versatile audio input for external audio integration
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Three varied filters for diverse sound shaping
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Unique tuned feedback module for creative sound design
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Digital waveform oscillator adds depth and variety
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Minimal menu diving needed for complex sound design
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Excellent for both beginners and experienced synth users
CONS
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Some users report occasional software bugs affecting performance
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Built-in effects underwhelming compared to competitors
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Sequencer may not be as engaging as other models
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Stiff knobs require adjustment period
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Paraphonic mode can be unpredictable at times
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Plastic sides may not appeal aesthetically to all users
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Routing modulations can be cumbersome during live performances
Critic Reviews
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