Keyboard
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
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
prologue-16: 38 W
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"

Weight
prologue-16: 9.1 kg/20.06 lbs.
prologue-8: 7.5 kg/16.53 lbs.

Included Items
AC power cable

Accessories (sold separately)

Soft Case: SC-PROLOGUE soft case (For prologue-16/prologue-8)
Sync Cable: SQ-CABLE-6 Sync cable
Damper Pedal: DS-1H damper pedal
Pedal Switch: PS-1 pedal switch, PS-3 pedal switch
Expression/Volume Pedal: XVP-20 Volume/Expression pedal, XVP-10 Expression/Volume pedal
Foot Controller: EXP-2 foot controller