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Korg opsix Module Altered FM Synthesizer

BH #KOOPSIXM • MFR #OPSIXM
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Korg opsix Module Altered FM Synthesizer
Key Features
  • 4 RU Desktop/Rackmount Synthesizer
  • True Six-Operator FM Synthesis
  • Expanded 64 Voice Architecture
  • Easy Color-Coded Operators with 6 Modes
Create unbelievable FM synthesizer patches with ease and flexibility with the Korg opsix module, an altered digital FM synthesizer that features a true 6-operator sound generator with a diversity of waveforms and operator modes that go far beyond the realm of standard FM. The opsix module features a 64-voice architecture and provides the editing simplicity of analog synthesis to control the power of the FM engine.
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Korg OPSIX Overview

Create unbelievable FM synthesizer patches with ease and flexibility with the Korg opsix module, an altered digital FM synthesizer that features a true 6-operator sound generator with a diversity of waveforms and operator modes that go far beyond the realm of standard FM. The opsix module features a 64-voice architecture and provides the editing simplicity of analog synthesis to control the power of the FM engine.

There are six sets of knobs and sliders on the opsix mkII panel, each with bicolor LEDs, which help you quickly and clearly see the relationships between operators change with each algorithm. Make direct changes to the pitch and volume for carriers, brightness of the sound, and strength of the harmonics for the modulators. These controls give you sonic control over the unpredictability of FM just by subtracting and adding sounds as if you were using a mixer or drawbars. The opsix module ships with a power supply and includes a free bundle of music software.

opsix Desktop/Rackmount Module
The opsix module supports MIDI 2.0 property exchange and poly aftertouch, and is an excellent companion to Keystage. It's fully compatible with the sounds of the original opsix, opsix mk II, opsix SE, and opsix native software, as well as numerous excellent third-party libraries, keeping the updated sounds and software fresh. The new 19" rack-mountable enclosure has the same controls as the keyed models, yet it is easily transportable and fits neatly into any studio or desktop production system.
MIDI 2.0
With the latest software updates, all models of opsix hardware and software now support MIDI 2.0 Property Exchange. Hundreds of the original factory sounds have been updated to include Polyphonic Aftertouch modulation (Channel Aftertouch is supported as well). All of this makes the opsix module an excellent companion to Korg's Keystage controller.
The opsix module is cleverly designed for both desktop and rackmount use. The panel is redesigned to fit into a standard 19" width, and the rear jack panel is recessed to allow easy access to cables even with gear mounted directly above. With desktop setups, brackets offer a choice of panel angles: flatter for performing standing up, or more upright for working while seated in your studio.
opsix Evolved
LIke the opsix mkII, the opsix module has 64 voices, double the original's 32 voices. You can enjoy tone editing without worrying about the number of polyphony. In addition, the operator/mixer section, which is the most distinctive feature of this product, has a color of green as an accent.
Color Coded Operator Mixer
The simple opsix module operator mixer, consisting of six faders and knobs, is at the heart of every sound. Each part lights up in red to represent the carrier and in blue to represent the modulator. Manipulating these will open up new sound creation possibilities and breathe new life into your musical ideas. This easy-to-understand practical workflow is as much a part of opsix mkII's uniqueness as the sound it delivers.
Intuitive Control
  • Whether you're fine-tuning a preset sound or building a patch from scratch, the six knobs on the right give you quick access to the parameters you need. It is seamlessly synchronized with the display, so you can clearly define the direction of your workflow. Combined with the operator mixer, you can create new sounds easily and above all, have fun.
  • Choose from a wide range of analog-style filters to add a vintage feel to your sound, from the sharp KORG MS-20 lowpass/highpass filter to the powerful and smooth KORG Polysix lowpass filter. There are also 2-pole and 4-pole low-pass, high-pass, band-pass, and band-reject filters with resonance.
  • It has a built-in spectrum analyzer and oscilloscope, allowing you to visually check the tone you are creating through the screen.
Six Types of Synthesis Consolidated into One
At its core, opsix is nothing but experimental. Waveforms can be arranged and modulated in an almost infinite number of ways, making it easy to create sounds similar to many types of synthesis.

Subtractive

  • Achieve many cutting-edge and classic analog synth tones using up to six envelopes and multi-modeling filters.

Semimodular

  • Change the tone by changing the signal path. Changing the algorithm can dramatically change the sound by changing the connection routing between operators. No patch cable is needed then.

Analog (Modeling)

  • With an operating system similar to an analog synth and a rich variety of waveforms, you can quickly master everything from digital to analog sounds. Enjoy a variety of sounds such as deep bass, crisp leads, thick pad sounds, and fuzzy brass tones.

Waveshaping

  • By intentionally adding distortion to the waveform, aggressive overtones such as harmonics or dissonances can be achieved. This allows you to achieve a unique hard tone.

Additive

  • By layering waveforms and blending their harmonics, you can create a variety of expressions such as harmony, dissonance, and high-tension sounds. With 6 operators available, you can also go back in time to create classic sounds from the history of FM sound sources.

Classic FM

  • opsix's flexible and powerful architecture begins with a true 6-operator FM. The result is an easy way to recreate the signature sounds you've heard on thousands of hit songs from the '80s to today.

In this way, opsix module is able to achieve sounds worthy of being called a future modern classic synthesizer.

Beyond FM
opsix module is FM-based, but its similarities with classical synthesis extend beyond that. Altered FM architecture offers a far wider variety of sounds than any previous synthesis, with new waveforms, filters, shaping, and effects, and new sound components such as LFOs, envelopes, modulation, and more.
Powerful Effects
opsix module has 3 blocks of 30 high-quality effects that can be used in combination to further improve your sound. Korg included everything from easy-to-use classic effects like chorus, phaser, delay, compression, and rich reverb to take your sound to the next level.
Advanced 16-Step Sequencer
  • The opsix module features an incredible step sequencer with the flexibility and power of a groovebox. Press the Play button on any sound to experience complex sequences. Every program has one sequence stored in it, and you can also create your own sequences.
  • You can record up to 6 notes per step, and edit each note's velocity, gate time, and playback timing. It is possible to perform long phrases, input with subtle timing shifts, and drum roll-like performances that are impossible with a typical 16-step sequencer. Additionally, opsix's motion sequencer can record changes in up to six parameters, allowing you to smoothly change the sound within a phrase or create rhythms that change significantly with each step.
Monster Modulation Matrix
  • The modulation possibilities of opsix module are simply incredible. With 6 operator modes and 40 preset algorithms, plus the ability to create your own user algorithms, opsix creates dynamic sounds.
  • Get even more power with the processor. The MOD section operates separately from the operator and features 3 EGs, 3 LFOs, and 12 virtual patches with diverse routing possibilities. You can use these features to create swirling soundscapes, add rhythmic movement to your sounds, and do a huge range of other modulations.
Throw the Dice
When you want to discover unexpected sounds, use the "Randomize" function. Pressing the button with the dice icon will completely change the synth's parameters and produce new, unique sounds. Randomize functions can be used for all parameters or only for operators, algorithms, and sequences.
Free Librarian Software
opsix Sound Librarian allows you to view and organize data from an opsix connected to your computer via USB, and to exchange sound data between opsix module and your computer.
Free Music Software Bundle
opsix comes with a large amount of music software from the beginning, including Ozone Elements, which allows you to create and master songs using AI, and Skoove, which helps you improve your keyboard playing and gives you software and synths from Korg and other brands.
opsix native
  • opsix is a digital synthesizer that provides unique sounds like no other. Hundreds of cutting-edge sounds to inspire your music production, plus intuitive customization at your fingertips.
  • The operator mixer dramatically changes the characteristics of the sound, and the flexible sound engine goes far beyond the realm of FM sound source. \
  • The interface provides a bird's-eye view of all parameters and further expands the potential of this synthesizer.
  • opsix native is a plug-in version equipped with the exact same sound engine as opsix. Use them for production with a DAW.
  • For those who have opsix series hardware, Korg has a package that allows you to crossgrade to opsix native (software) at a discount. Get a coupon code from opsix Sound Librarian and purchase opsix native at the KORG Shop for a special price. Seamlessly switch between opsix hardware and software to use the same sound in a variety of environments, whether you're performing live or producing music in a DAW.
EAN: 4959112238060

Korg OPSIX Specs

Key Specs
Sound Generation
Digital / Sample-Based
Number of Sounds, Kits, or Samples
350x Factory Sound Preset
150x User Sound Preset
Maximum Polyphony
80 Voice
Audio I/O
1/4" / 1/4" Headphone
MIDI I/O
1x DIN 5-Pin Input
1x DIN 5-Pin Output
CV/Gate I/O
No
Patch Points
No
General
Synth Type
Desktop Synth Module
Kit Components
Sound Generation
Digital / Sample-Based
Keyboard
No
Aftertouch
Channel/Mono or Polyphonic Aftertouch (External MIDI Only)
Expression Controls
6x Slider
6x Knob
Number of Pads
No
Sounds
Display
Main Display: Monochrome LCD
Number of Sounds, Kits, or Samples
350x Factory Sound Preset
150x User Sound Preset
Number of Song Presets
No
Favorites Recall
64x Quick Recall Slot (16 Slots x 4 Banks)
Maximum Polyphony
80 Voice
Multitimbrality
Sample Library: 2-Part
Internal Memory
RAM: 4 GB
Built-In Effects
Modulation: Chorus, Flanger, Phaser
Dynamic FX: Compressor
Distortion/Drive
Delay: Delay Sync
Reverb: Echo, Tape Delay
EQ: 3-Band
Master FX: Limiter
Performance Functions
Arpeggiator, Layer, Octave Shift, Sampler, Sequencer, Split/Layer, Transpose
Built-In Speaker
No
Synthesis
Oscillators
4x Variable (Wavetable)
Envelopes
4x Assignable Envelope Generator per Voice
Sequencing & Recording
Sequencer
Yes
Arpeggiator

Number of Arpeggio Patterns: 7x Factory
Modes: Up, Down, Random, Manual
Media/Memory Card Slot
No
Connectivity
Audio I/O
2x 1/4" TRS Stereo Line Output
1x 1/4" TRS Headphone Output
Pedal Support
1x 1/4" Sustain
MIDI I/O
1x DIN 5-Pin Input
1x DIN 5-Pin Output
CV/Gate I/O
No
Patch Points
No
Sync I/O
No
Network I/O
No
USB I/O
1x USB-B (USB 2.0, Host Connection, MIDI)
Bluetooth
No
OS Compatibility
macOS 12 to 13 / Windows 10 or Later
Power
Power Requirements
AC/DC Power Adapter (Included)
AC Input Power
100 to 240 VAC, 50 / 60 Hz
AC/DC Power Adapter
12 VDC at 2500 mA (Included)
Power Consumption
5 W
Physical
Color
Blue
Rackmount Size
4 U
Included Accessories
Power Cord
Dimensions
19 x 6.8 x 4.1" / 48.2 x 17.2 x 10.4 cm
Weight
3.7 lb / 1.7 kg
Packaging Info
Package Weight
5.47 lb
Box Dimensions (LxWxH)
22.1 x 10.6 x 6.4"

Korg OPSIX Reviews

Really fun synth

By Lenny
Rated 5 out of 5
Date: 2026-06-29

Very versatile synth that can masquerade as many things and not just classic FM. Well designed user interface and easy to navigate. At it's core it is not a very complicated sound generation unit but at same time extremely powerful. I think it deserves to be a classic on its own.

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