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Prologue Polyphonic Analogue Synthesizer
A new-generation of flagship analog synthesizer. The ultimate multi-voice, multi-timbre, multi-engine.
Prologue is a fully-programmable, full-featured, professional synthesizer. Preceded by the four-voice polyphonic minilogue and the monophonic monologue, it’s the long awaited debut of the flagship: the prologue.
Prologue is a polyphonic analog synthesizer equipped with a full-sized keyboard. With powerful analog circuits that are descended directly from the earlier models of the series, together with a newly developed digital multi engine and gorgeous DSP-based effects, prologue expands the variety of sounds and the possibilities for user customization.
The lineup is comprised of two models that cover musicians’ needs for not only stage use, but also studio, home, or touring use: 16-voice 61-key prologue-16, and the eight-voice 49-key prologue-8. These instruments are capable of sounds that go beyond existing analog synthesizers.
- 16/8-voice analog synthesizer circuit.
- Newly developed multi-engine equipped with three types: noise, VPM, and user.
- High-quality digital effects.
- Open source software that can be customized by the user.
- Newly developed L.F. COMP. analog effect (prologue-16 only).
- Bi-timbre support.
- Voice modes that allow voices to be flexibly recombined.
- Arpeggiator equipped with a variety of types and range settings.
- Program Sort allows rapid access to 500 programs.
- Japanese-made high-quality natural touch keyboard.
- Oscilloscope function shows the waveform visually.
- Tough and stylish body made of aluminum and wood.
- Sync with another groove machine to enjoy jam sessions.
- Lineup includes a 16-voice 61-key model and an eight-voice 49-key model.
16/8-voice analog sound
The prologue is a polyphonic analog synth with 8 or 16 voices, designed using 11,000 components. It offers sound quality, presence, and an easy-to-use interface like its predecessors.
Prologue features 2VCO + MULTI ENGINE, 1VCF, 2EG, 1VCA and 1LFO. Wave shaping, sync/ring and a two-pole LPF with enhanced sharpness, drive and low cut (HP) switch all make for improved sound over minilogue and monologue, providing powerful basses, leads and beautiful pads.
Newly developed multi-engine
The ingenuity of prologue goes beyond its analog design. The newly developed multi engine is provided as VCO3, adding digital waveforms and FM. This multi engine, which is equipped with three different sound engines, can be combined with the analog VCOs to expand prologue’s sonic potential far beyond that of a traditional analog synthesizer.
There are four types of noise generator, indispensable for percussive sounds or sound effects. Experience how digital filtering can produce direct changes in the color of the noise.
VPM/FM oscillator newly developed for Prologue gives complex overtones & metallic, sharp sounds not achievable in analog. SHAPE knob & 16 types of oscillator & analog filters create a realm of unprecedented sounds.
The user oscillator section lets you load oscillator programs of your own creation. Sixteen slots are provided, and one type of morphing wavetable oscillator is built-in as a preset.
The high-quality digital effects feature pristine 24-bit floating-point processing, and add a further polish to the sound of the prologue. With two effect units provided (a modulation effect and delay/reverb), you can choose from a wide variety such as chorus or ensemble, warm tape delay, or diverse reverbs. The user effect slots let you load effect programs of your own creation.
Open source means ongoing development, 16 oscillator & effect slots, plus downloadable librarian software for creating oscillators & effects, to create sounds combining digital & analog synthesis. Start with sample code from KORG & join the user community. The prologue is yours.
Exclusive VU meter on Prologue-16 indicates L.F. COMP. analog circuit delivers presence not obtainable with EQ; great for high-volume performances maximizing dynamics.
The prologue is a two-timbre synthesizer that lets you play two different programs simultaneously. In addition to layer and split, you can use crossfade to smoothly transition between the main timbre and sub timbre. An ample 16 or 8 voices ensure that the player’s advanced performance needs will be met.
Prologue provides 16/8 voice modes: POLY for chords, MONO for bass, UNISON for leads, CHORD for single-finger chords. Adjust the DEPTH knob for further effects.
Four voice modes
- POLY: Operates as a poly synth with up to 16 or 8 voices. Turn the VOICE MODE DEPTH knob to switch to DUO mode, in which the instrument operates in unison as a poly synth with up to 8 or 4 voices.
- MONO: Operates as a mono synth with sub oscillator.
- UNISON: Operates as an all-unison mono synth.
- CHORD: Plays chords.
The powerful arpeggiator opens up a world of limitless inspiration. It provides a four-octave range, and six arpeggiator types including manual set. From phrases that could not be performed on a keyboard to sequence-like sound designs, the arpeggiator can play a versatile array of roles.
Sort by category, alphabetically, favorites, FREQUENT, ENVELOPE (note duration) - the Prologue 16 program sort function's eight conditions quickly find the sound without disrupting workflow.
Eight program sort methods
- PROG NUM: Sort by program number.
- CATEGORY: Sort by program category.
- ALPHABETICAL: Sort programs alphabetically.
- LIKE: Sort by programs that you “liked.”
- FREQUENT: Sort by how frequently you used the program.
- ENVELOPE: Sort by envelope shape.
- RANDOM: Sort randomly.
- LIVE SET: Sort programs registered in a live set.
Japanese-made natural touch keyboard
High-quality Japanese-made keyboard provides superb touch. Prologue's body radiates beauty with a black aluminum front panel, metal knobs, silver indices, and oak wood side panels for a Made In Japan feel.
prologue-16: 61 keys (Natural touch keyboard with velocity)
prologue-8: 49 keys (Natural touch keyboard with velocity)
Sound Generation Analogue sound generator + Multi digital sound generator (Noise, VPM, User)
Maximum Polyphony: prologue-16: 16 voices, prologue-8: 8 voices
Programs: Over 500 voices (more than 200 preload, 300 user programs). Each program provides a program sort function that includes voice mode and timbre settings, and allows up to 8×4 banks of live set programs to be registered.
Voice Mode: 4 (POLY, MONO, UNISON, CHORD). The VOICE MODE DEPTH setting allows different parameters to be varied for each mode.
Timbres: Max two timbre (Main timbre, Sub timbre). Layer, crossfade, and split settings are possible
Arpeggiator: 6 types (Manual, Rise, Fall, Rise Fall, Random ,Poly Random). Tempo and note range can be changed
Program Sort: 8 (PROG NUM, CATEGORY, ALPHABETICAL, LIKE, FREQUENT, ENVELOPE, RANDOM, LIVE SET)
Main Synth Parameters
VCO1: WAVE (SAW, TRIANGLE ,SQUARE), OCTAVE, PITCH, SHAPE
VCO2: WAVE (SAW ,TRIANGLE, SQUAREa), OCTAVE, PITCH, SHAPE
MODULATION: PITCH EG (ALL, VCO1+2, VCO2), PITCN EG INT, SYNC, RING, CROSS MOD DEPTH
MULTI ENGINE: NOISE/VPM/USER, OCTAVE, TYPE ,SHAPE
MULTI ENGINE Types
Noise generator: 4 types
VPM oscillator: 16 types
User oscillator: 16 slots
MIXER: VCO1, VCO2, MULTI
VCF: CUTOFF, RESONANCE, EG INT, DRIVE, LOW CUT, KEYTRACK
AMP EG: ATTACK, DECAY, SUSTAIN, RELEASE
EG: ATTACK, DECAY, SUSTAIN, RELEASE
LFO: WAVE (SAW, TRIANGLE, SQUARE), MOD (FAST, SLOW, BPM), RATE, INT, TARGET (PITCH, SHAPE, CUTOFF)
Main Effect Parameters
MOD EFFECTS: OFF/ON/SELECT (CHORUS, ENSEMBLE, PHASER, FLANGER, USER), SPEED, DEPTH
MOD EFFECTS Types
CHORUS: 8 types
ENSEMBLE: 3 types
PHASER: 8 tyepes
FLANGER: 8 types
USER: 16 types
DELAY/REVERB: OFF/DELAY/REVERB, TIME, DEPTH
DELAY: 8 types
REVERB: 8 types
L.F. COMP (prologue-16 only): OFF/ON, GAIN
Wheels: Modulation wheel that can modify different parameters for each program, pitch wheel
Knobs: PORTAMENTO knob, VOICE SPREAD knob (only on prologue-16)
Main: Real-time OLED oscilloscope provides visual feedback of parameter changes
MULTI ENGINE section: 7 segments x 6 digit LED display
Audio: Head phone jack (Stereo phone jack) OUTPUT L/MONO, R jacks (monaural phone jack unbalanced)
Sync: SYNC IN jack (3.5 mm [1/8"] mini jack, maximun input level 20 V)
SYNC OUT jack (3.5 mm [1/8"] mini jack, output level 5 V)
MIDI: MIDI IN jack, MIDI OUT jack
USB: USB B jack
Controls: EXPRESSION jack, DAMPER jack (half damper is not supported)
Power Supply: AC Power Supply terminal
Power Consumption: prologue-16: 38W prologue-8: 23 W
Dimensions (W x D x H)
Prologue-16: 874 mm x 348 mm x 118 mm/ 34.41" x 13.70" x 4.65"
Prologue-8: 709 mm x 348 mm x 118 mm/ 27.91" x 13.70" x 4.65"
Prologue-16: 9.1 kg/ 20.06 lbs.
Prologue-8: 7.5 kg/ 16.53 lbs.
AC power cable
Accessories (sold separately)
SC-PROLOGUE soft case (For prologue-16/prologue-8), SQ-CABLE-6 Sync cable, PS-1 pedal switch, PS-3 pedal switch, XVP-20 Volume/Expression pedal, XVP-10 Expression/Volume pedal, EXP-2 foot controller