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Korg Prologue-8 49-Key 8-Voice Polyphonic Analog Synthesizer


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Korg Prologue-8 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: Prologue.

Prologue-8 is a polyphonic analog synthesizer with a full-size keyboard. With powerful analog circuits that are descended directly from earlier models in the series together with a newly developed digital Multi Engine and gorgeous DSP-based effects, Prologue-8 expands the variety of sounds and the possibilities for user customization.

  • 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
  • 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
  • 49-key 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

8-voice analog sound
Prologue-8 is a polyphonic analog synthesizer with 8 multitimbral voices. Korg's analog synthesizer development in recent years has culminated in Prologue-8, which was designed using 11,000 discrete electronic components. Although Prologue-8 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.

Prologue-8 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-8 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.

Newly developed Multi Engine
The ingenuity of Prologue-8 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-8's sonic potential far beyond that of a traditional analog synthesizer.

Noise generator
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 oscillator
The VPM (variable phase modulation) / FM oscillator was newly developed for Prologue-8. Its metallic and sharp sounds with their complex overtones could never be obtained by analog means. With 16 types of oscillator and the SHAPE knob, you'll be intuitively guided through complex sound design. Combine these wave shapes with Prologue-8's gorgeous analog filters and prepare for sounds you never thought possible.

User oscillator
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.

Digital effects
The high-quality digital effects feature pristine 24-bit floating-point processing and add a further polish to the sound of Prologue-8. 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.

User customization
Open source means that Prologue-8's development is ongoing. It provides 16 user oscillator slots and 16 user effect slots and you can use the dedicated librarian software (available spring 2018) to create your very own oscillators and effect programs and load them into Prologue-8.

What types of sound will you create by combining the expanded digital oscillators with analog synthesis? You can create original programs and share code to participate in the user community. Start with sample code provided by Korg. Prologue-8 belongs to you.

Prologue-8 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 8 voices ensure that the player's advanced performance needs will be met.

Voice modes
Prologue-8 provides voice modes that let you freely combine the 8 voices for performance. The standard POLY mode lets you play chords with up to 8-note polyphony. MONO mode is ideal for bass using the sub-oscillator. UNISON allows you to generate thick lead tones by sounding all voices in unison. CHORD lets you play chords with one finger. In conjunction with the DEPTH knob you can use these modes to obtain a variety of effects.

Four voice modes:

  • POLY mode: operates as a poly synth with up to 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 4 voices.
  • MONO mode: operates as a mono synth with sub oscillator.
  • UNISON mode: operates as an all-unison mono synth.
  • CHORD mode: 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.

Program Sort
The Program Sort function lets you instantly change the sorting order of the 500 programs. You can sort by category, alphabetical order, use LIKE to view the programs that you marked as your favorites, FREQUENT to sort the programs in order of their frequency of use or ENVELOPE to sort the programs in order of their envelope shape (note duration). By choosing from eight different sorting conditions you'll be able to quickly find the sound that you need without interrupting the tempo of your rehearsal or production 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
The attention to detail expected of a flagship extends to Prologue-8's playability and design as well.

The keyboard is a high-quality Japanese-made natural touch keyboard providing the same superb touch and feel as on Korg's high-end workstations and allowing a high degree of expressive power.

Prologue-8's body emanates beauty and the presence of a boutique synth and redefines the look of a classic synthesizer. The black aluminum front panel features the same curvature as Minilogue and sports a beautiful hairline finish. Metal knobs with a sense of weight, diamond-cut silver indices and oak wood side panels are some of the details that emphasize the high quality of this 'made in Japan' instrument.

More Information
Manufacturer Korg
Condition New
Included from Manufacturer Power Cable
Analog/Digital Analog
Number of Keys 49
Weighted Keys No
Key Action Natural touch keyboard with velocity
Aftertouch No
Programs/Presets 500
Voices of Polyphony 8
Oscillators per Voice 3
Multitimbral Bi-timbral with layer and split
Effects Reverb
Audio File Playback No
Arpeggiator Yes
USB Port (to Host) MIDI, System Updates, Editor/Librarian/Patch Manager
Audio Outputs Dual 1/4" unbalanced stereo output
Control Connections 1/4" expression pedal input
1/4" damper pedal input (half damper not supported)
Onboard Controllers Pitch & mod wheels
Width 27.91"
Depth 13.7"
Height 4.65"
Product Weight 16.53 lbs.
Unique Features Multi Engine oscillator with noise generator, variable phase modulation / FM oscillator or 'user oscillator' options
User customization via open source programmable 'user oscillator'

Korg USA Warranty Policy

All Korg products purchased from a Korg USA authorized dealer are warranted to be free from defects in material and workmanship to the original consumer for a period of one (1) year.

Register your new Korg keyboard, keyboard rack module or digital piano online and receive a certificate that extends the product warranty for an extra year from the date of purchase. Product must be registered within 90 days of purchase to receive an extra year of warranty.

Tuner and Metronome products are warranted to be free from defects in material and workmanship to the original consumer for a period of three (3) years.

Tubes, AC Adapters and Foot Switches are warranted to be free from defects in material and workmanship to the original consumer for a period of ninety (90) days.

The customer must provide proof of purchase in order to obtain warranty service. The dated sales slip or copy thereof is the only acceptable proof of purchase.

The product must be purchased from a Korg USA authorized dealer and have a valid serial number.

This warranty is valid only in the USA.

Damage resulting from the following causes are excluded from the warranty set forth above: misuse, including damage occurring during shipment, damage caused by battery leakage, accident, fire, unauthorized repairs, tampering, cosmetic damage or other types of damage which are the result of improper handling or abuse; the cleaning of controls or contacts due to exposure to dirty, dusty, or otherwise contaminated environment; damage resulting from modification; damage to units used for loan or rental.

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