Korg Opsix

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We compare 600+ stores and found this item at 3 stores. Prices updated June 4, 2026.

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4.3 (34)

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4.0 (32)

$599.00 6 available New

$345.47 11 available Used

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2.0 (1)

$329.00

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Average Price: $424

Budget/Beginner

$500

$1501+

Price Tier

In the Synthesizers category, Korg Opsix is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Description

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Discover the Korg Opsix, a musical marvel that's not just a synthesizer, but a musical universe waiting to be explored. With its groundbreaking Altered FM architecture, this digital synth offers a sound spectrum far wider than any single synthesis type. Unleash the power of its six-operator FM synthesis, providing fluid sound navigation from digital to analog with ease and precision.

The Korg Opsix stands out with its intuitive Operator Mixer, a user-friendly feature that invites hands-on exploration and sound-shaping. With six faders and knobs that light up red for a sound and blue for a modulator, you have the power to dramatically shift sound characteristics at your fingertips.

The synth also boasts a high-definition OLED display, seamlessly syncing with the six data entry knobs on the right. This feature provides a clear, focused direction to your workflow, making the creation of fresh sounds super easy and most importantly, fun!

Tap into various analog-style filters, including the radical Korg MS-20 low-pass/high-pass filter and the smooth Korg PolySix low-pass filter. These filters add a vintage feel to your sound, while also offering a wide range of sound modulation options.

Key Features:

True six-operator FM synthesis: Offers a wide range of dynamic possibilities.
Altered FM architecture: Breaks the boundaries of traditional FM synthesis.
Operator Mixer: Provides easy access for dramatic shifts in sound characteristics.
High-definition OLED display: Seamlessly syncs with the six data entry knobs for a clear, focused direction to your workflow.
Variety of analog-style filters: Includes the radical Korg MS-20 low-pass/high-pass filter and the powerful yet smooth Korg PolySix low-pass filter.
Three blocks of 30 types of high-definition effects: Enhance your sounds even further.
Polyphonic Motion Sequencing: Features a flexible and powerful step sequencer.
Monster Modulation Matrix: Offers six operator modes, 40 preset algorithms, and a wide variety of routing possibilities.
Randomize feature: Allows for unexpected sonic discoveries.
Free bundle of music software: Includes “Ozone Elements” from Izotope, “Skoove” to improve your keyboard playing skills, and software synths from KORG and other brands.

Product specs

Brand	Korg
Model	Opsix 37-Key Altered FM Synthesizer
Finish	Blue / Black
Year	2020 - 2024
Categories	Digital Synthesizers, Keyboard Synths
Analog / Digital	Digital
Key Size	Full Size
Keyboard Action	Synth Action
MIDI I/O	MIDI Input, MIDI Output, USB MIDI
Number of Keys	37 Keys
Polyphony	32 Voices

FAQs

Is the Korg Opsix suitable for beginners in synthesis?: Yes, the Korg Opsix is designed to be user-friendly with an intuitive interface, making it accessible for beginners while offering deep features for advanced users.
What type of synthesis does the Korg Opsix use?: The Korg Opsix utilizes altered FM synthesis, combining classic FM synthesis with a variety of other synthesis techniques for versatile sound creation.
How many voices of polyphony does the Korg Opsix support?: The Korg Opsix supports up to 32 voices of polyphony, allowing for complex and layered soundscapes.
Does the Korg Opsix integrate easily with DAWs?: Yes, the Korg Opsix features MIDI Input, MIDI Output, and USB MIDI, providing seamless integration with most DAWs.
What are the standout features of the Korg Opsix's sound engine?: The Korg Opsix's sound engine is notable for its operator mixer section, which allows unique sound design possibilities by blending FM synthesis with subtractive, wave shaping, and more.

Videos

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loopop

Korg OPSIX Review, tutorial and 10 patch ideas // 250 presets played // FM synthesis explained

loopop

Korg OPSIX - SonicLAB Review

sonicstate

Bad Gear - Korg OpSix

AudioPilz

Own FM with Korg’s opsix Altered FM Synthesizer

Korg

Korg Opsix Altered FM Synthesizer Demo

Reverb

Korg OPsix Review & Beginner Tutorial // Easy to use FM synthesizer!

BoBeats

Korg Opsix vs Vintage DX7 // The definitive comparison

Starsky Carr

Korg OPSIX Altered FM Synthesizer - Taking Digital Synths to a Whole New Level

Andertons Synths, Keys and Tech

Diving Into Korg's Opsix Altered FM Synthesizer And Its 250 Presets

Vintage King

Reviews

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PROS

Granular control with knobs and sliders for all operators and algorithms
Ability to import and use old DX7 patches
Versatile sound engine with 21 oscillator waveforms, 11 filter types, and 30 effects
Intuitive interface for FM synthesis, making sound design accessible and fun
Deep modulation routing with a virtual patch matrix
Can stack effects for complex soundscapes
32-voice polyphony with diverse sound creation capabilities
Compatible with both hardware and software versions
Multiple operator types for a variety of sound shaping options
Affordable yet innovative FM synth with extensive features

CONS

Reliability issues with reports of defective screens
Limited to three octaves, which may not suit all users
UI still involves some menu diving, despite improvements
Lack of dedicated knobs for specific parameters limits tactile control
No multitimbral functionality for more complex arrangements
Tiny LCD screen, making navigation less intuitive
Disappointing hardware quality, perceived as flimsy by some users

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Korg Opsix.

Mods and upgrades

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Owners often consider converting the Opsix into a module due to its large size, with DIY chop module modifications being a popular option.
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Tall Dog Electronics offers a conversion kit to transform the Opsix into a module, retaining the Pitch and Mod Wheels for improved space efficiency.
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It's suggested to convert the Opsix into a module to address its bulkiness, especially if keys aren't essential for the user.
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User experience

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Despite the cheap hardware, the Opsix is a favorite for sound design enthusiasts, offering a vast array of FM-derived sounds akin to a digital modular synth.
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Users find the Opsix's effects, such as the guitar amp effect, particularly useful for achieving authentic organ and piano tones in live settings.
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Features and functionality

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The Opsix operator mixer is highlighted for simplifying FM synthesis, enabling complex filtering and modular-like sound design with its flexible algorithm routing.
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The Opsix has a filter and amplifier with envelope generators, offering a subtractive approach to FM synthesis, simplifying harmonic control.
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The Opsix supports FM, subtractive synthesis, and physical modeling, with a unique auto patch builder for dynamic tone changes, enhancing sound creation flexibility.
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The Opsix allows free operator routing through user algorithms, simplifying FM sound design by removing the need to commit to a fixed algorithm upfront.
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The Opsix's sequencer, while not as complex as the Modwave/Wavestate, is noted for its powerful offset feature that creates unique strummed chord effects.
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Use cases and applications

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The Opsix is praised for its deep bass sounds, making it ideal for those seeking aggressive FM leads and textures, although its digital tone may not suit all music styles.
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The Opsix is praised for its ability to create diverse sounds, from aggrotech-industrial-metal beats to mellow organ tones.
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The Opsix excels in subtractive synthesis with a configurable signal path, acting as a sort of 'synth designer' for users.
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Comparisons

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The Opsix SE version features a much better keybed with aftertouch and increased polyphony (80 voices vs. 64) compared to the MkII, appealing to users prioritizing build quality.
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Compared to the Hydrasynth, the Opsix offers more flexibility with 6 operators versus the Hydra's 3 oscillators, allowing for a broader range of additive organ sounds.
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Build quality

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The Opsix is noted for its cheap shell and lightweight feel, with some owners reporting it feels too light for its size, impacting perceived durability.
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Some users note the keybed feels plasticky, akin to standard MIDI controllers, lacking premium feel but not necessarily being poorly constructed.
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While the Opsix keys are full-sized, they lack aftertouch, which some players may find limiting for expressive performances.
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Software and compatibility

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The Opsix can load DX7 presets, broadening its sound palette for users interested in classic FM sounds.
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Korg offers a plugin version of the Opsix for $200, providing a digital alternative with similar synthesis capabilities.
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Critic Reviews

soundonsound.com

Korg's Opsix synthesizer reimagines FM synthesis, delivering a compact powerhouse that's easy to program and rich in sound design possibilities. Its innovative architecture allows for a vast range of timbres, making it suitable for any genre. However, the narrow keyboard and limited performance controls may frustrate players seeking a more traditional playing experience. Additionally, while the Opsix excels in creating unique sounds, its four-stage envelopes are a letdown compared to its predecessors. Still, for those looking to explore new sonic realms, the Opsix is an enticing option that promises hours of creative fun.

positive

Full Review

Korg opsix review | MusicRadar

musicradar.com

Korg's opsix redefines FM synthesis with a refreshing spirit, boasting a user-friendly interface and a wealth of sonic possibilities. Its unique operator modes and extensive sound-shaping capabilities allow musicians to craft intricate patches with ease. However, it does fall short with a mono timbral design and lacks aftertouch, which could limit expressive play. Despite these drawbacks, the opsix delivers a fun and engaging experience that's hard to resist, making it a standout choice for both newcomers and seasoned synth enthusiasts.

positive

Full Review

The Big Review: Korg Opsix

musictech.com

Korg's Opsix redefines FM synthesis by making it accessible and intuitive, with a rich array of features including six operators, multiple synthesis modes, and powerful sequencing capabilities. Musicians will appreciate its hands-on interface and impressive sound palette, perfect for generating everything from classic electric piano tones to experimental textures. However, the complexity of FM synthesis can still be daunting, and some may find the depth overwhelming. While it shines in creative potential, users looking for a straightforward synth might find themselves grappling with its intricacies. Overall, the Opsix is a compelling choice for those seeking to explore the depths of FM synthesis, but it may not be for everyone.

positive

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