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
February 7, 2011 @ 6:13 pm
As pointed out in an earlier, buried post by "d9". Here is a great review of what to expect from RADIAS as well as some GREAT demos of what you can get when programming it.

Don't knock it. It is a great sounding piece of kit with more options than the R3 for $100 more.


http://www.yout ube.com/watch?v=9c4FdD2_ucc
February 7, 2011 @ 5:15 pm
@xman Ever tried to program DX7, TX81z? Those are dead too? RADIAS is easy to program compared. MAN UP and learn to program.

It's NOT a preset synth. Korg discontinued because it was expensive to produce compared with R3 (less powerful MMT, LESS Polyphony, no PCMs, no drums, missing routing options and effects chains). R3 has a higher profit margin and less complicated assembly. MicroKorg is produced for the same reason. It sells.

If it was such dead synth you wouldn't hear it on TONS of chart topping hits, everything from Britany to Gaga & BEP to Dandy Warhols & JUSTICE to Snoop Dogg
February 7, 2011 @ 10:53 am

bad presets + complicated programming to get anything decent = dead synth. Radias is already discontinued for that reason. and old Microkorg is still produced.
February 7, 2011 @ 1:46 am
If you want a RADIAS you have to program it. The effects are A+1, unison mode is killer fat, the floor is super quiet, drums are great and you can emulate the flavor of MS series. RADIAS has been used on TONS of hit records in the 6 years of it's release. Why? People program it, and 15 year old girls don't "feel" the sound is less or more "airy" than an MS2kB. Sadly, the cheaper R3 gets all praise. Why buy a Virus anyway? You can have a whole stable of great synths for that price. (and I own MS2kB, Virus TI Polar, ION, ARPS...) RADIAS is great. Buy one and program it, it won't disappoint.
January 18, 2011 @ 9:49 am
Maybe it's because I bought mine in the same week as I bought my Alesis Ion (now my all time fav VA!), but this one never really grew on me.

Programming it was fairly long winded compared to other VA's (try programming a simple delayed vibrato on a Radias - snnooorrreee). For all the knobs, I still found myself having to dig into submenu's, which was very tiresome.

It's a fairly chunky and snappy sounding unit bass-wise, but lacks any real bite or character elsewhere (in fact, the EMX-1 has more character using the same technology). Sounded too much like a VST to my ears...
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User Rating

Rated 4.21 (585 Votes)

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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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