Korg Radias

Korg Radias Image

The Korg Radias is a Virtual Analog synthesizer that was released by Korg in 2006. It takes advantage of the MMT (Multiple Modeling Technology) that their flagship OASYS synthesizer module employs. The synthesizer itself is similar in design to the MS2000, but offers many more capabilities. It is capable of emulating older digital synthesizers and classic analog synthesizers like the MS-series without any noise or aliasing. The Radias also allows for various external sounds to be fed through its filters and envelopes. It also has the Korg DWGS (Digital Waveform Generator System) that the Korg DW-8000 employs.

The Radias also takes advantage of the KKS (Korg Komponent System) which allows it to be used with the 49-key keyboard or used as a standalone rack module, and the Radias-R unit can be connected to the M3 Music Workstation/Sampler along with its various keyboard models.

Korg Radias Image

The Radias has two oscillators per timbre and a noise generator. Oscillator #1 has nine basic waveforms, with four types of modulation and PCM (64 synth sounds, 128 drum sounds) and Oscillator #2 has four basic waveforms with two types of modulation. The Radias has the ability to stack up to five types of waveforms in Oscillator #1, while using only one voice of polyphony. In Unison mode, you can stack five additional waveforms, while using more polyphony. With this function, you can create some awesome super waveforms-the overall result can contain up to 25 detuned waveforms. The Radias also has two Low-frequency Oscillators (LFO) that add more modulation to the two audio oscillators. These LFO's provide six waveforms and their speeds can be set manually or by tempo.

The Radias itself has four timbres per program. With a timbre, you can assign one drum program, another can have a lead, a bass, and a vocoder as well; all in one program! Each timbre can contain one synthesizer/drum kit, equalizer, and two multi-effects.

The Radias has two filters that can be used side-by-side, individually, or in a series. They offer Low Pass, High Pass, Band Pass, and Combination modes. Each filter offers 24 or 12 dB modes for the low pass filter. The effects on this unit are remarkable as well. The Radias comes loaded with 33 different effects: Delays, Chorus, Flangers, Compressors, talking modulator, and even the good old Polysix Ensemble effect. You can assign one master effect to the program, while each timbre gets its own two effects, creating a whole world of possibilities. The Radias also offers a 16-band vocoder with a nice Formant Motion recording function that allows you to record up to 7.5 seconds of external audio which can then be triggered via the keyboard.

The Radias has a built in arpeggiator as well, providing six different patterns to choose from. Patterns can be up to 32 steps long and the gate/velocity can be set for each step to get that sound you want! It also has two 32-step sequencers (they can be combined for a 64-step on a single timbre). They can easily be assigned to a drum kit, for example, to use the Radias as a programmable drum machine. The step sequencer supports 8-voice polyphony per step.

Korg Radias Image

Overall, this synthesizer is a nice addition to anybody's set-up. It's a good virtual analog that is also quite good for the beginner to learn subtractive synthesis on. Korg also has excellent customer service, and the owner's manual for the Radias is very comprehensive and clearly explains its many functions. The Radias also has a software-based sound editor that is compatible with the newest versions of Windows and OSX. It has been used by Jordan Ruddess and Tangerine Dream.

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127 Visitor comments
Sydney
July 5, 2011 @ 9:59 pm
I believe a synth is a synth. Analog or Digital. If you love the art for what it is and are a true lover of it, this nitpicking shouldn't make any difference. Electronic music is great in any form. What I do believe IMHO by some of the english misspelling I think it is the European group of premature teens and some adults who have not matured that are pushing the Nord type brands of Europe, great synths also. I've been woking with synths since I sat down infront of a Moog IIIC back in 1970 and I never looked back. I love all Synthesizers. Let's all get along and agree to disagree.
Guy Fleegman
June 8, 2011 @ 8:19 pm
I get it now fvsr, you liked the Radias about a year ago, couldn't get it to do what you wanted, gave up, and are now completely disgruntled. You have posted about 14 times and it was somewhat positive at the beginning and got more negative as time went on.

I think that if X-Trade has something good to say about it, then it's probably a good synth.
Guy Fleegman
June 8, 2011 @ 8:13 pm
@fvsr:

You've made your case known. We get it. You don't like the Radias. Please move along, thank you.

I like my Juno-106, Spectralis, Matrix 1000, Cz-101, but I enjoy the Radias as well.
fvsr
June 7, 2011 @ 9:00 pm
"All you need is patience to unleash the power of Radias"
"But to get there, you have to build up your skills with the features by actively spending time programming it".
That is because regular stuff doesn`t sound good. A simple saw bass lines doesn`t sound good because Radias doesn`t have low end. Very simple question. Do a side by side test with another VA and you will see (you will listen).
eins
June 6, 2011 @ 7:17 pm
You can do amazing things with this synth. But to get there, you have to build up your skills with the features by actively spending time programming it. This is a synth for programmers. It is not much suited for people who want large banks of presets (although there are some very good programs, but consider them to be samples of what can be done). If you come to this synth saying "it's ok if there are no programs in there at all" and attack it as a clean slate - then see the presets as programming examples you will be in the right mindset for getting this synth and you will be rewarded.
 
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  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 24 Voice
  • Multitimbral - 4 Parts
  • Oscillators - 2 Oscillators
  • Waveforms - Square, Sine, Triangle, Saw, PCM (Drum and Synths), Formant, Noise, Audio in
  • LFO - 2 LFO's, 6 Virtual Patches, 3 Modulation Sequencers (Waveform, Cross, Unison, VPM)
  • Filter - 2 Filters, -24db/-12db lowpass, high pass, band pass, comb
  • Envelope - 3 Envelope Generators
  • Effects - Delay, Flanger, Vocoder, Talk Modulation, Reverb, Compressor, Phaser
  • Sequencer - 2 32-Step Sequencers (combined for 64)
  • Arpeggiator - Up / Down / Random / Alt1 / Alt2 / Trigger
  • Keyboard - 49 Keys/Velocity Sensitive
  • Memory - 256 Programs, 128 Timbre Templates, 128 Insert Effect templates, 128 Master Effect Templates
  • Control - Midi In/Out/Thru, Keyboard In, USB
  • Date Produced - 2006

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