Korg RADIAS Synthesizer Vocoder  

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The Korg RADIAS Synthesizer Vocoder brings together a sound module based on Korg's cutting-edge, analog-modeling MMT engine and a 49-note, velocity-sensitive keyboard. It also has pitch and mod wheels... Read More

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The Korg RADIAS Synthesizer Vocoder brings together a sound module based on Korg's cutting-edge, analog-modeling MMT engine and a 49-note, velocity-sensitive keyboard. It also has pitch and mod wheels and a full complement of knobs and buttons. The unique design lets you move the control module to accommodate a laptop or other audio gear.

This 24-voice Korg synth offers a variety of synthesis algorithms together with multiple effects, modulation sequencing, and comb filter and wave shaping features, as well as formant-motion vocoding. RADIAS' innovative design can be custom configured to suit you. The control module can be used independently or teamed with the unique dedicated keyboard as a seamlessly integrated instrument. RADIAS includes customizable synthesis templates to be used as starting points, with template data for 128 synth timbres, 128 insert effects, and 128 master effects.

The heart of RADIAS beats with Korg's cutting-edge MMT (Multi Modeling Technology) synth engine, which borrows much of its modeling techniques from Korg's flagship OASYS. It eliminates aliasing noise in even the highest frequencies and delivers clean, pure waveforms. Korg synthesizer provides two oscillators for each timbre that deliver modeled analog waveforms, formant waveforms, noise, ring modulation, sync, and classic and modern PCM waveforms. The analog modeled waveforms allow a variety of oscillator modulation algorithms to be used to create complex sounds, even from a single oscillator. The dual-filter structure allows two filters to be used individually, side by side, or in series for maximum versatility. Three Envelope Generators (EG) are used to apply time-varying changes to the pitch, filter cutoff, and amp level, as well as many other parameters. The bundled RADIAS Sound Editor/Librarian software makes it easy to edit, manage, and archive settings on your computer through the USB port. The Korg RADIAS synth has two LFOs, variable Drive mode, a flexible wave shaping circuit, three modulation sequencers, six virtual analog synth patch cords, envelope follower, 16-band vocoder, 30 effect algorithms, six types of arpeggiator patterns, dual linkable 32-step sequencers, 256 programs, 32 drum kits, and 16 formant motion sets.

  • MMT (Multiple Modeling Technology) synth engine
  • 24-voice polyphony
  • Oscillator 1: 9 basic waveforms, 4 types of modulation, PCM (64 sounds, 128 drums)
  • Oscillator 2: 4 basic waveforms, 2 types of modulation
  • Noise generator
  • Filter 1: -24 dB Low Pass, -12 dB Low Pass, High Pass, Band Pass, Thru modes
  • Filter 2: Low Pass, High Pass, Band Pass, Comb modes
  • Each filter has serial, parallel, and individual routings
  • 1 driver or wave shaper (11 types)
  • 3 EGs
  • 2 LFOs
  • 6 virtual patches
  • 3 modulation sequences
  • 16-band vocoder
  • Variable level/pan for each vocoder channel
  • Vocoder formant control functions
  • Envelope follower
  • 30 effects
  • 6 arpeggio types (Up/Down/Alt1/Alt2/Random/Trigger)
  • Dual 32-step sequencers
  • 256 programs
  • 32 drum kits
  • 49 velocity-sensitive keys
  • Modulation wheel
  • Pitch bend wheel
  • 2 - 1/4" inputs
  • 1/8" mic/line input
  • L/MONO, R 1/4" outputs
  • L/R 1/4" outputs
  • 1/4" headphone jack
  • Assignable pedal jack
  • Assignable switch jack
  • MIDI I/O/Thru
  • USB connector
  • 128 x 64 pixel full-graphic backlit LCD screen
  • RADIAS upright: 34.84"W x 8.78"H x 15.08"D
  • RADIAS folded: 34.84"W x 3.90"H x 15.08"D
  • 19.18 lbs.
  • Windows system compatibility to connect via USB
    Supported OS: Microsoft Windows XP Home Edition/Professional
    Supported Computer: A computer with USB connector that meets the above requirements

    Macintosh system requirements to connect via USB
    Supported OS: Mac OS X 10.2 or later
    Supported Computer: Apple Macintosh with USB port

    Note: USB MIDI has been tested and works under Rosetta and Universal Binary on Intel-based Macs, using the standard Class Compliant driver. In this case, however, Port Names will be shown as generic names like Port 1, Port A etc. instead of the product name.

    Windows Sys. Req. for RADIAS Editor
    CPU: Intel Pentium/Celeron 500MHz or faster
    Memory: 256MB or more, 512MB or more recommended
    Monitor: 1024 x 768, 16-bit color or higher
    Operating system: Microsoft Windows XP Home Edition/Professional Edition Service Pack 1 or later

    Mac Sys. Req. for RADIAS Editor
    CPU: Apple G4 400MHz or better
    Memory: 256MB or more, 512MB or more recommended
    Monitor: 1024 x 768, 32000 colors or higher
    Operating system: Mac OS X v.10.2.8 or later

    Note: This software has been tested on Intel-based Macs, and while not Universal Binary compliant, runs fine under Rosetta

    PCM sound processed with INFINITY

    Specifications subject to change without notice
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 purchaser as listed below:

Labor: 1 Year
Parts: 1 Year

Exceptions: Tubes, AC Adapters, Foot Switches: 90 days

Warranty Requirements and Limitations:

-Proof of Warranty - 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.

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.

Register online and extend your warranty!
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.

  • Customer Reviews

Review Snapshot

by PowerReviews

(based on 5 reviews)

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Reviewed by 5 customers

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(2 of 3 customers found this review helpful)


Radias is very easy to Program

By Nick

from Texas

The Korg Radias is an amazingly easy Analog Modeled Synthesizer to program especially if you understand synthesizer basics. The design of the software is excellent in just how easy it is to navigate to any of the many features this synth has. I have several synths and this is by far the easiest synth to learn, master, and program. It has many great features like Vocoder, Modulators, Arpeggiator, with great sounding Oscillators and Filters. One complaint is the PCM waves in this synth are weak and too few but most like me will probably be using this synth for the standard analog type waves it produces such as saw, square, triangle, and sine. The Unison feature yeilds incredibly fat analog sounds. It only has 24 note Polyphony but that's still very high for an analog modeling synth and if you need more just buy another Radias and stack them. I plan on buying 2 more cuz I really like this synth. I own the Rackmount version because the Radias Keyboard is too small and doesn't have aftertouch.

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(3 of 12 customers found this review helpful)


Nice, but analog sound could be better

By Anonymous

from Undisclosed

This is a vitrual analog synth. It is nice that korg is getting into this. I bought a microkorg which is a simpler version of this model. This is a little overpriced, but the sounds are ok. They are samples of true analog synths, but if you want a really good analog synth, buy a Clavia Nord or Dave Smith Instruments. If you save up enough, you could even get an Alesis Andromeda. Take it from me, I love Analog synths, the best Analog synths are those from the past like a Moog

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(2 of 3 customers found this review helpful)



By sheatheman

from San Antonio, TX

I have the Korg MS2000. I love that freaking synth. It doesn't have everything I might want, but it sounds great and has a billion parameters. When I saw this several months after I got the MS2000, I was amazed that they actually put everything that I wanted to have on my MS2000 into the Radius. I wanted drums, it has drums. I wanted more parameters, it has more parameters. I wanted a sequencer, it has one. This synthesizer will destroy you if you aren't careful. It has everything you will ever want unless one day they create a biotic midi interface. (you control the music with your mind...) Yes if you have the cash, buy this, and make sure you can set aside 5 hours of free time per day.

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(1 of 3 customers found this review helpful)


Korg Radias

By RickWakemanWannabe

from UT

This is a beast. I got it for christmas and have already spent 100+ hours exploring the endless possiblilites of this awesome keyboard. Before i purchased it, i was looking at a few other keyboards- The Alesis Ion, Roland SH-201, and others. I am glad i spent the extra money to get the Korg because it blows all of the others away. This great little synth packs a huge punch and adds tons of sound to my band. The arpegiator is a nice feature as well as the step sequencer. Though this is not true analog, i swear i really couldn't tell the difference. It's not all tinny and cold sounding like the other cheaper synths on the market. If you have the extra money, this is a instrument well worth it!

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(4 of 4 customers found this review helpful)



By Nico

from Texas

This is handsdown the biggest showstopper out there. Korg comes throuh again delivering a very fun to use sound beast. Go try one today and I assure you that if you spend 5 minutes tweaking it you will come out with a very exiting sound. I almost forgot to mention it looks way cooler than anything else on the market, making it an automatic showstopper.

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