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Prophet-10 Polyphonic Analog Keyboard - Image 1

Prophet-10 Polyphonic Analog Keyboard

KeyboardAnalogPolyphonic

Reviving the legendary Prophet-10 design from Sequential Circuits' golden era, this modern take doubles down on that classic 10-voice polyphony with two authentic Curtis 3340 VCOs per voice, delivering the thickest analog tones imaginable.

Each voice packs sawtooth, triangle, and pulse waves with PWM, plus hard sync from Osc A to B for those signature throaty sweeps, while Osc B doubles as a sub-audio LFO for extra modulation depth. Switchable filters nail both the warm SSI 2140 vibe of Rev1/2 and the punchy CEM3320 of Rev3, fed by dual ADSR envelopes—one for filter, one for amp—alongside Poly Mod routing for FM, pulse width tricks, and wild filter effects. The knob-per-function panel makes programming a breeze in live mode, with stack/split for layering two patches across the premium 61-note Fatar keybed boasting velocity and aftertouch for expressive play. Unison stacks all 10 voices with detune and chord memory, Glide adds silky portamento, and a global LFO with initial amount bakes in movement; tuck in 200 factory and 200 user presets, stereo outs, headphones, CV/gate, and walnut-trimmed steel build at 35 inches wide and 20.5 lbs.

Players love its organic warmth and stability—no more vintage tuning woes—plus modern perks like MIDI/USB that slot it perfectly into any rig, earning high marks for pads, leads, and everything in between.

Released

2020

Status

In Production

Synthesizer
Format
Keyboard
Type
Subtractive
Internal Battery
No
Voice
A/D
Analog
Polyphony
Polyphonic
Oscillators
2
Oscillator Type
VCO (Voltage Controlled)
Voices
10
Filter
Lowpass, 4-pole
Envelopes
2
LFO
1
Effects
No
Expression
Aftertouch
Monophonic
Velocity
Yes
MPE
No
Additional
61-note Fatar keyboard, switchable filter types (2140/CEM3320), vintage knob, unison mode, stack/split functionality, CV/gate I/O, walnut trim
Software
-
I/O
Audio In
-
Audio Out
1 stereo
Headphone
1
MIDI
In, Out, Thru
MIDI Type
USB, DIN (5-pin)
Ports
CV/Gate, USB, Expression Pedal, Sustain Pedal
Wi-Fi
No
Workflow
Arpeggiator
No
Sequencer
No
Mod Matrix
No
Memory
200 factory, 200 user presets
Measurements
Dimensions
12.70" x 35.12" x 3.80" (32.26 x 89.20 x 9.65 cm)
Weight
20.5 lbs (9.3 kg)
Last updated Mar 21, 2026