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SKU
KOR-OPSIXCK
 

Korg OpSix Altered FM Synthesizer CABLE KIT

MPN
OPSIX

$799.99

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    Korg OpSix Altered FM Synthesizer

    Korg OpSix is an 'altered' six-operator FM synthesizer. With its astoundingly accessible operator mixer and flexible sound engine that goes well beyond traditional FM, this instrument widens the potential of digital synthesizers to the utmost. Whether you're new to synths, looking for a completely unique addition to your sound palette or an original FM purist, OpSix will deliver on all your expectations.

    (Sells separately for
    $799.99
    )
    Hosa CSS-203 Stereo Interconnect Dual 1/4" TRS to Dual 1/4" TRS - 3m

    This dual balanced 1/4" cable is designed to connect your instrument to any unit with right and left channels. Great for keyboards, mixing consoles, PA systems, or other sound reinforcement or recording applications.

    (Sells separately for
    $12.95
    )
    Hosa MID-203 Dual MIDI Cable - 3m

    This convenient dual cable carries both MIDI in and out signals.

    (Sells separately for
    $12.95
    )
    Hosa USB-210AB High Speed USB Cable Type A to Type B - 10'

    This cable is designed to interconnect devices with USB interfaces. It is ideal for connecting an audio interface, USB microphone, USB capable electronic instrument, or many computer peripherals to a Mac or PC.

    (Sells separately for
    $7.95
    )
    On-Stage KSP50 Universal Footswitch

    This versatile universal pedal features a built-in 6' cord and polarity switch. Compatible with any keyboard or electronic instrument with a 1/4" pedal jack.

    (Sells separately for
    $9.95
    )

    Korg OpSix represents a new and expansive re-imagination of classic digital synthesis. Much like Korg did when bringing wave sequencing back in a more powerful, more musical and more immediately accessible way with Wavestate, so was the approach to FM sound generation for OpSix, resulting in another incredibly flexible and unique synth.

    OpSix is an 'altered' six-operator FM synthesizer. With its astoundingly accessible operator mixer and flexible sound engine that goes well beyond traditional FM, this instrument widens the potential of digital synthesizers to the utmost.

    OpSix is an instrument for players of all generations, modern in every way, getting back to the basics to offer you a glimpse of the future. Whether you're new to synths, looking for a completely unique addition to your sound palette or an original FM purist, OpSix will deliver on all your expectations.

    • True 6-operator FM synthesis
    • FM exploration, easier than ever
    • Full editing with DATA ENTRY rotary encoders
    • 5 operator modes that expand FM synthesis
    • 40 preset algorithms and user algorithms
    • 3 envelope generators, 3 LFOs and 12 virtual patches offer an extensive range of modulation
    • 11 powerful filters, including modeled MS-20 and Polysix filters
    • 3 series of 30 types of high-definition effects
    • Visually-satisfying editing with a spectrum analyzer and oscilloscope
    • Powerful 16-step polyphonic sequencer
    • Randomize feature adds unpredictability to sounds
    • Favorite and smooth sound transition (SST) functions
    • Compact design featuring a 37-note keyboard
     
    Korg OpSix Altered FM Synthesizer logo

    True six-operator FM synthesis – and more
    OpSix is a digital synthesizer designed around a six-operator sound generator. Although the instrument has a six-operator FM sound structure like classic FM synthesizers, OpSix doesn't just reproduce their sounds – it totally reimagines them. With a diversity of waveforms, operator modes that go beyond the realm of FM and a filter that brings together a fusion of subtractive synthesis, OpSix tames the complexities of FM so that you can focus on exploring sounds instead of programming them. Simply put, OpSix offers the editing simplicity of analog synths to control the power of arguably the deepest type of digital synthesis.

    detail image of Korg OpSix panel showing operator mixer sliders

    FM exploration, easier than ever
    OpSix's knobs and sliders with two-color LEDs let you quickly and clearly see the relationships among operators, whose roles change with each algorithm. This lets you make direct changes to the pitch and volume for carriers, to the brightness of the sound or the 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 DJ mixer or organ drawbars.

    detail image of Korg OpSix panel showing operator mixer sliders
    detail image of Korg OpSix panel showing screen and data entry encoders

    Full editing with DATA ENTRY knobs
    Use the six context-sensitive DATA ENTRY knobs for full editing without minimizing or summarizing any information. The combination of six graphical parameters on the large OLED display at the center and these rotary encoders means you can edit without getting lost, a far cry from traditional FM synths and their paucity of controls.

    screen image from Korg OpSix showing HOME/ALGO page

    The HOME/ALGO page is the starting page for everything on OpSix and features major parameters including algorithms, EGs and effects. Use this page and the operator mixer to get started with everything you need to do.

    screen image from Korg OpSix showing HOME/ALGO page
    detail image of Korg OpSix panel showing silk-screened diagrams for FM and Ring Mod operator modes

    Five operator modes that expand FM synthesis
    So OpSix is a collection of everything appealing about FM synthesis – but that's not all. Aside from sine waves, OpSix offers an expanded list of diverse waveforms in pursuit of sounds with even more complex harmonics, which can also be used as a subtractive synth offering simple filtering. Operator modes on OpSix are used to generate sounds completely outside what a traditional FM sound generator can provide; these operator modes let you create sounds using modulation other than FM. OpSix offers you a much wider range of sound creation, letting you combine the five operator modes – FM, Ring Mod, Filter, Filter FM and Wave Folder – and select from a wide range of waveforms.

    diagram illustrating one of 40 preset FM operator algorithms on Korg OpSix

    40 preset algorithms and user algorithms
    An algorithm is a combination of different operator roles and connections. OpSix goes far beyond classic FM synthesizers by offering 40 preset algorithms and then goes on to offer a user algorithm function for exponentially greater sound possibilities, letting you construct and arrange an algorithm from scratch.

    diagram illustrating one of 40 preset FM operator algorithms on Korg OpSix
    screen image from Korg OpSix showing Virtual Patch page

    Wide range of modulation
    The synthesis offered by OpSix is made even more powerful with the processors that come at the end of the signal chain. The MOD section works separate from the operators, with three EGs and three LFOs, and 12 modular-style virtual patches make a wide variety of routing possible. Use these features for a huge range of modulation, creating everything from gentle swelling to rapid motion in your sounds.

    screen image from Korg OpSix showing Filter page

    Powerful filters
    In contrast to FM, the FILTER section follows your creation of sounds by offering analog synthesizer-like subtractive synthesis. Select from a full range of filters you want to use, from the radical MS-20 low pass / high pass filter to the powerful-yet-soft Polysix low pass filter that gives your sound a vintage feel, as well as two- or four-pole low pass, high pass, band pass and band reject filters with resonance.

    screen image from Korg OpSix showing Filter page
    screen image from Korg OpSix showing FX page

    A treasure trove of effects
    The high-definition effects you'll find on OpSix can be used right away in recording. The instrument offers three simultaneous series of 30 different effects; from standard effects like compressor, EQ, chorus, flanger, phaser and stereo delay to distinctive effects like rotary speakers, grain shifters and more, as well as shimmering reverb effects that add a new dimensions to already awesome sounds.

    screen image from Korg OpSix showing spectrum analyzer

    Spectrum analyzer and oscilloscope
    The analyzer built into OpSix is a must-have feature for visualizing FM synthesis. It shows output levels for each frequency band so that you can see at a glance the distribution and changes to the harmonics caused by modulation. OpSix also features a built-in oscilloscope that lets you check the output waveforms. The colorful changes to the sound and visual feedback are sure to draw you into a deep synthesizer vortex.

    screen image from Korg OpSix showing spectrum analyzer
    detail image of Korg OpSix panel showing sequencer control buttons

    Powerful 16-step polyphonic sequencer
    The 16 buttons on the bottom right-hand part of the panel glow green with colors that evoke FM synths while providing you with a multipurpose 16-step sequencer. With this onboard polyphonic note sequencer, you can record up to six notes per step and edit the velocity, gate time and playback timing for each note. This lets you create long phrases or make subtle shifts in timing to emulate strums or drum rolls, something not possible on a typical 16-step sequencer. The motion sequencer lets you record changes for up to six parameters, creating smooth motion changes in sound within a phrase or building rhythms that change dramatically with each step. OpSix offers the best of both worlds: an easy-to-use 37-note keyboard and a sequencer to rival grooveboxes. Just press the PLAY button – you'll be floored by the power this sequencer lets you unleash.

    detail image of Korg OpSix panel showing INIT randomize button

    Adding unpredictability to sounds with the Randomize feature
    Use the Randomize feature borrowed from Korg Wavestate if you're in the mood for unexpected sonic discoveries: press the button marked with the dice icon to generate a newly randomized sound. You can use the Randomize feature for the entire sound or just for the operators, the algorithm or the sequences. Use the randomized sounds as-is or edit them as you like – the sky's the limit.

    detail image of Korg OpSix panel showing INIT randomize button
    Izotope Ozone logo

    Free bundle of music software
    OpSix comes with a diverse variety of music software including Izotope Ozone Elements to create songs and master them using AI, Skoove to help you improve your keyboard playing skills, Reason Lite DAW software and software synths from Korg and other brands. In other words, the moment you get your hands on this synthesizer you'll have a variety of tools to help you take your music to the next level.

    screenshot from Korg Gadget 2 Le iPad app

    Apps for iPad/iPhone

    • Korg Gadget 2 Le music production studio DAW app
    • Korg Module piano/keyboard sound module app

    screenshot from Korg Gadget 2 Le iPad app
    screenshot from Korg M1 software synthesizer

    Software for Mac/Windows

    • UVI Digital Synsations synthesizer
    • AAS Ultra Analog Session synthesizer
    • AAS Strum Session acoustic guitar
    • AAS Lounge Lizard Session electric piano
    • Reason Studios Reason Lite DAW music production
    • Free 3-month trial of Skoove Premium online piano lesson
    • Korg Gadget 2 Le for Mac DAW music production
    • iZotope Ozone Elements audio mastering

    Operator modes
    Although the basis of OpSix is the FM sound generator, you can change the operator mode to perform different kinds of modulation besides FM. The combination of ring modulator, filter and wavefolder makes it possible to create new kinds of sounds that surpass the range of typical FM sounds.

    An Operator includes an input, an output and an oscillator. The carrier's operator mode determines how the oscillator is modulated by the input of the modulator. This modulation gives the sound its character. In addition to FM, Ring Mod, Filter, Filter FM and Wave Folder operator modes, OpSix features Mute and Bypass modes that are useful when editing.

    waveform diagram illustrating operation of Korg OpSix FM operator mode

    FM mode
    In this mode, when the LFO is used to raise and lower the pitch you will hear a vibrato-like effect. FM (frequency modulation) is an ultra high-speed vibrato. The phase of an oscillator is modulated using the input signal from the modulator, which rapidly raises and lowers its pitch. As modulation is incredibly fast, we hear the result not as vibrato but as a change in tone. In this operator mode, we can use the FB and WIDTH parameters to control the amount of self-feedback and the width of the oscillator waveform.

    waveform diagram illustrating operation of Korg OpSix Ring Mod operator mode

    Ring Mod mode
    Modulating the amplitude of a signal creates tremolo. Ring modulation, or Ring Mod for short, is ultra-fast tremolo. The input signal from the modulators is multiplied with the carrier oscillator to rapidly change the amplitude of the signal. As with FM, the extremely fast modulation is perceived as a change in tonal character. The input from the modulator(s) can be processed by a rectifier, where the SHAPE parameter controls the amount of rectification. The larger the value, the more overtones will be added.

    waveform diagram illustrating operation of Korg OpSix Ring Mod operator mode
    waveform diagram illustrating operation of Korg OpSix Filter operator mode

    Filter mode
    This is a filter with a key tracking function. The input signals from the oscillator and modulator(s) are input into the filter. The OSCMIX parameter controls the amount of the oscillator signal fed to the filter. The cutoff frequency is synchronized to the oscillator pitch and the CUTOFF parameter adds an offset.

    waveform diagram illustrating operation of Korg OpSix Filter FM operator mode

    Filter FM mode
    Modulating a filter's cutoff with an LFO creates an effect like a wah pedal. Filter FM creates an ultra high-speed wah effect. The cutoff frequency is modulated using the input signals from the modulator(s), and the oscillator signal is used as audio input for the filter. As with Filter mode, the modulation center frequency is synchronized with the oscillator pitch and you can use the CUTOFF parameter to add an offset.

    waveform diagram illustrating operation of Korg OpSix Filter FM operator mode
    waveform diagram illustrating operation of Korg OpSix Wave Folder operator mode

    Wave Folder mode
    This is a waveshaping effect. The wave folder circuit generates harmonics by inverting the waveform of the input signals from the oscillator and the modulator at a fixed threshold. The OSCMIX parameter controls the amount of the oscillator signal fed into the wavefolder.

    More Information
    SKU KOR-OPSIXCK
    MPN OPSIX
    Manufacturer Korg
    Condition New
    Included from Manufacturer Power supply
    Analog/Digital Digital
    Number of Keys 37
    Key Action Synth action with velocity and release velocity sensitivity
    Aftertouch No
    Programs/Presets 500 program storage locations
    Voices of Polyphony 32 voices
    Sometimes 24 voices depending on settings
    Oscillators per Voice Varies by Sound Engine
    Effects 3 simultaneous series of 30 effects
    Reverbs, delays, chorus, phaser, flanger, rotary speaker, auto wah, 3-band EQ, distortion, guitar amp, decimator, grain shifter, limiter, compressor, more
    Sequencer 16-step polyphonic note sequencer
    6-lane motion sequencer
    Arpeggiator Yes
    MIDI In, Out, USB
    USB Port (to Host) MIDI, System Updates
    Audio Outputs Dual balanced 1/4" stereo main output
    1/4" stereo headphone output
    Control Connections 1/4" footswitch input
    Onboard Controllers Pitch bend wheel
    Modulation wheel
    Width 22.24"
    Depth 13.31"
    Height 3.54"
    Product Weight 6.93 lb

    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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