The Prologue-8 is a polyphonic analog synthesizer with 8 multitimbral voices. KORG’s analog synthesizer development in recent years has culminated in the prologue, which was designed using 11,000 discrete electronic components. Although the prologue is a flagship instrument, it still retains the inviting feel and accessibility of its predecessors. It features a pure analog path, impeccable sound quality, stunning presence unlike any other poly synth, and the same intuitive interface as the minilogue and monologue, granting you intuitive access to a vast world of analog synthesis.

The prologue uses a structure of 2VCO + MULTI ENGINE, 1VCF, 2EG, 1VCA, and 1LFO. In addition to distinctive, original circuitry, such as wave shaping to shape the oscillator’s overtones and a sync/ring switch, prologue also features a two-pole low pass filter with enhanced sharpness, drive that adds powerful distortion, and a low cut (high pass) switch. Every detail has been improved on from minilogue and monologue. Its sound covers every sonic possibility: fat basses, powerful leads, and the beautiful pads that you expect from a polyphonic synthesizer.

Specifications

• Keyboard — 49 keys (Natural touch keyboard with velocity)
• Sound Generation — Analogue sound generator + Multi digital sound generator (Noise, VPM, User)
• Maximum Polyphony — 8 voices
• Programs
  
  • 500 voices (more than 250 preload, 250 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, SQUARE), 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
  • 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), MODE (FAST, SLOW, BPM), RATE, INT, TARGET (PITCH, SHAPE, CUTOFF)
• Main Effect Parameters
  
  • MOD EFFECTS — OFF/ON/SELECT (CHORUS, ENSEMBLE, PHASER, FLANGER, USER), SPEED, DEPTH
  • DELAY/REVERB — OFF/DELAY/REVERB, TIME, DEPTH
  • L.F. COMP (prologue-16 only) — OFF/ON, GAIN
• Multi Engine
  
  • Noise Generator — 4 types
  • VPM oscillator — 16 types
  • User oscillator — 16 slots
• Mod Effects
  
  • CHORUS — 8 types
  • ENSEMBLE — 3 types
  • PHASER — 8 types
  • FLANGER — 8 types
  • USER — 16 slots
• Delay/Reverb
  
  • DELAY — 8 types
  • REVERB — 8 types
• Controls
  
  • Wheels — Modulation wheel that can modify different parameters for each program, pitch wheel
  • Knobs — PORTAMENTO knob, VOICE SPREAD knob (only on prologue-16)
• Display
  
  • Main — Real-time OLED oscilloscope provides visual feedback of parameter changes
  • MULTI ENGINE section — 7 segments x 6 digit LED display
• Input/Output connectors
  
  • Headphone jack (Stereo phone jack)
  • OUTPUT L/MONO, R jacks (monaural phone jack unbalanced)
  • SYNC IN jack (3.5 mm [1/8"] mini jack, maximum input level 20 V)
  • SYNC OUT jack (3.5 mm [1/8"] mini jack, output level 5 V)
  • MIDI IN jack
  • MIDI OUT jack
  • USB B jack
  • EXPRESSION jack
  • DAMPER jack (half damper is not supported)
• Power Supply
  
  • AC Power Supply terminal
  • Power Consumption — 23 W
• Dimensions (W x D x H) — 709 mm x 348 mm x 118 mm/27.91" x 13.70" x 4.65"
• Weight — 7.5 kg/16.53 lbs.
• Included Items — AC power cable