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Korg R3 Synthesizer / Vocoder Keyboard

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The Korg R3 is powered by the MMT (Multiple Modeling Technology) analog synthesis-modeling sound engine and delivers 2-timbre/8-voice performance in an easy-to-use 37-key 'board. 128 programs deliver crucial synth sounds from leads and pads to strings and percussion with 2 oscillators, 3 envelope generators, 2 filters, an amp section, effects, and ...  Click To Read More About This Product

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The Korg R3 is powered by the MMT (Multiple Modeling Technology) analog synthesis-modeling sound engine and delivers 2-timbre/8-voice performance in an easy-to-use 37-key 'board. 128 programs deliver crucial synth sounds from leads and pads to strings and percussion with 2 oscillators, 3 envelope generators, 2 filters, an amp section, effects, and a noise generator available for each voice. In addition to the vocoder which works with the onboard mic input, it has a modulation sequencer for precision 16-step control of modulation movement.

MMT synthesis
The versatile range of built-in oscillator algorithms covers everything from familiar analog synthesizer waveforms, to unique digital waveforms and even live audio input. For each voice, the R3 provides two oscillators. Oscillator 1 (OSC1) gives you a choice of seven waveforms including sawtooth, pulse, formant, noise, and DWGS, as well as allowing you to select an external audio source connected to the AUDIO INPUT 1 and 2 jacks. To enhance the basic analog synthesizer waveforms such as the sawtooth, pulse and triangle waves, you can apply cross modulation, pulse-width modulation, unison voice-thickening, or even VPM (Variable Phase Modulation).

Oscillator 2 (OSC2) gives you a choice of four waveforms such as sawtooth and sine, and can also be used as a modulation oscillator to apply sync modulation, ring modulation or a combination of the two for distinctively analog synthesizer sounds. The noise generator (NOISE) produces white noise, and provides a useful way to create breath noise for wind instrument sounds, or to produce evocative sound effects. The sawtooth wave and pulse wave use the same basic low-aliasing design as the AL-1 Analog Synthesizer found in Korg's flagship OASYS synthesizer.

Two filters with selectable routing
The R3 features a dual filter structure that can be configured in series, parallel or an individual structure allowing each oscillator to have its own dedicated filter. Filter 1 is a multi-mode resonant design that lets you continuously vary between various low-pass, high-pass and band reject characteristics. Filter 2 has a switchable, multi-mode resonant design that also includes comb filtering, which can be made to feed back in order to boost multiple series of overtones, giving you amazing potential for generating unique tonal changes.

Amp section with a Drive/Waveshaping circuit
The Drive circuit lets you create the subtle yet distinctive distortion typical of an analog synthesizer, or generate new overtones by deeply overdriving the sound. The Waveshaping circuit gives you twelve types of transformation including hard clipping, and can be used as a decimator to produce typically digital roughness by converting the sampling frequency. It can even be used as a sub-oscillator, opening up new sound-making possibilities. The Drive/Waveshaping circuit can be placed either before the amp section or immediately before Filter 1 to give you different nuances of sound. With additional parameters - such as the Punch Level setting that emphasizes the attack, giving greater impact to percussive sounds - you have the tools to enjoy radical creativity that's not restricted by concepts of the past.

Multiple EGs and LFOs
Each voice provides three ADSR envelope generators (EG) for classic analog synthesis control over pitch, filter and amp characteristics. The classic and intuitive four-stage ADSR design has been enhanced with five different attack and release curves, allowing the EG contours to be crafted with new levels of precision and articulation.

Two LFOs with six waveform choices can be used to apply cyclic modulation to synth parameters. High-speed digital processing ensures that vibrato, wah, and tremolo will produce extremely smooth tonal changes, and each waveform can be extensively modified via the Shape control, greatly expanding the versatility of the LFO section for creating highly complex types of modulation.

Virtual Patches for sophisticated sound-creation
The R3 provides six Virtual Patches that simulate the patch cord functions of the PS series and MS series - classic Korg synthesizers of the past. There are twelve modulation source including EG, LFO, velocity, and keyboard tracking (the position at which you play the keyboard) that can be used to apply modulation to fifteen different destination parameters such as pitch, oscillator 1 control, or filter 1 type.

Dramatic tonal changes from the Modulation Sequencer
The Modulation Sequencer can apply a time-varying change to a specific parameter, similar to CV control on an analog synthesizer. You specify the value of each of sixteen steps, and then choose how to play back these steps (forward, backward, looping etc.) to vary the sound in unique ways. There's also a Motion Rec function that lets you capture and replay realtime knob movements.

Formant Motion produces personalized Vocoder sounds
The R3's powerful vocoder function lets you use your voice to add a distinctive tonal character to the sound of the oscillator, creating "speaking" tones. The vocoder consists of sixteen filter bands, and can replicate the classic vocoder sounds of the past, as well as letting you dramatically transform the timbral character by adjusting the level and pan of each frequency band to create absolutely original vocoder sounds. The R3 comes with an XLR-connector gooseneck microphone, so you can start enjoying this superb vocoder functionality right away.


37 notes (full size keys, velocity sensitive):
Programs: 2 Timbres maximum (when using Layer, Split, or Multi)
8 voice polyphony (maximum)
128 programs (16 banks x 8 programs)
16 formant motion data sets (7.5 second x 16): *Specifications and features are subject to change without notice.

AUDIO INPUT 1 (with MIC/LINE switch): Rear Panel 1/4" phone jack (unbalanced)
Input Impedance: 600 Ohm
Maximum Input Level: -10 dBu (LINE), -33 dBu (MIC)
AUDIO INPUT 1 (MIC): Front Panel XLR jack (balanced)
Input Impedance: 600 Ohm
Maximum Input Level: -33 dBu
AUDIO INPUT 2: 1/4" phone jack (unbalanced)
Input Impedance: 600 Ohm
Maximum Input Level: -10 dBu

L/MONO, R 1/4" phone jacks (unbalanced): Output Impedance: 1.1 k Ohm (MONO: 550 Ohm)
Maximum Output Level: +7.5 dBu or more
Load Impedance: 10 k Ohm or more
PHONES 1/4" phone stereo jack: Output Impedance: 10 Ohm
Maximum Output Level: 35 mW
Load Impedance: 33 Ohm
USB: Type B

Main Display: 8-character x 2 line LCD
Four Sub Displays: 8-character x 1 line LCD

Power Supply: DC 12 V, 6.5 W

Dimensions: 25.00" (W) x 10.63" (D) x 2.99" (H)
Weight: 6.17 lbs.
Included Items:
Gooseneck microphone
AC adapter (DC 12 V)

Synth: 2 oscillators + noise generator
Oscillator 1: Wave: 8 types (Sawtooth, Pulse, Triangle, Sine, Formant, Noise, DWGS, Audio In), Modulation: Waveform, Cross, Unison, VPM
Oscillator 2: 4 types (Sawtooth, Square, Triangle, Sine), Modulation: Ring, Sync, Ring+Sync
Waveshape: 12 types: Drive, Decimator, HardClip, OctSaw, MultiTri, MultiSin, SubOSCSaw, SubOSCSqu, SubOSCTri, SubOSCSin, Pickup, LevelBoost
Multimode Resonant Filters: Filter 1: -24 dB/oct LPF -12 dB/oct LPF -12 dB/oct BPF -12 dB/oct HPF Thru, Filter 2: LPF, HPF, BPF, COMB
EG x 3, LFO x 2
Vocoder: 16 channel vocoder, adjustable level and pan for each channel, Formant Shift function, Formant Motion function, Formant Hold function
Effects: Timbre: 2 band EQ, Insert effect (per timbre), Program: Master effect
Arpeggiator: Six types: UP, DOWN, ALT1/2, Random, Trigger, Individual step on/off function
Programs: 128 programs (16 banks x 8 programs), 16 formant motion data sets (7.5 second x 16)
Pro Coverage
Manufacturer's Warranty
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
Questions & Answers View All

Review Snapshot

by PowerReviews
KorgR3 Synthesizer / Vocoder Keyboard

(based on 5 reviews)

Ratings Distribution

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Reviewed by 5 customers

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(87 of 103 customers found this review helpful)


A Amazing Synth!

By Garrett Adams

from Kansas

Comments about Korg R3 Synthesizer / Vocoder Keyboard:

I have owned this for a while now. It so easy to work and has amazing leads and sounds. Anyone who wants a synth who is in a band or is in a techno/electro band buy this synth its so worth the money. But it does come with software a little hard to use but the synth is still amazing!

(16 of 17 customers found this review helpful)


R3=Great Synth

By Brandon

from California

Comments about Korg R3 Synthesizer / Vocoder Keyboard:

The Korg R3 is Awesome! When I got this highly advanced and powerful sound creating device I was super stoked. I was very pleased with the fantastic sounds coming out of it, and still am today. It is perfect for the intermediate/advanced musician. This is due to the whole setup being quite confusing... Unless you read the manual and clearly could comprehend and understand it, i would recomend you buy possibly the microKORG or some other synth. Great bang for your buck, but you may end up being confused aboout what it can/cannot do. I'm still by the way discovering new things about it to this day, and I received it about a year back... Once again, great for all buyers, but the starting musician may feel very intimidated.

(6 of 7 customers found this review helpful)


Very Cool Synth

By High Voltage

from Seattle, Wa

Comments about Korg R3 Synthesizer / Vocoder Keyboard:

I really don't play KBs, but my wife was interested in getting into playing and making electronic type music. I bought this board for her to get started. She is pretty new to the whole thing so there is a learning curve in learning how to use all the stuff it does, which is a lot. It seems well made and has a ton of features. The sound quality is excellent. It doesn't come with any onboard drum stuff, which is a bummer, but many DAWs have them built it, or get a drum machine. Over all, this is a nice quality board with lots of features in a small package. Total noobs may need some patience learning how to use it all, but once you do, you will be very happy with it. I know my wife is, and although it isnt my bag, I do appreciate quality instuments!

(2 of 2 customers found this review helpful)


amazing product

By matteo

from saint james, new york

Comments about Korg R3 Synthesizer / Vocoder Keyboard:

this product is an amazing peice of work. it takes the power of the radius which i also own and makes it more compact for shows on the go. i have performed with this many a times and it is yet to fail me on anything. this product is simply amazing in all its glory and i recommend buying so much.

(2 of 2 customers found this review helpful)


Love It

By Billy

from Texas

Comments about Korg R3 Synthesizer / Vocoder Keyboard:

First let me say my son & I are total beginners. The features are amazing. We have spent many hours just exploring all the aspects of this synth and I think we have many, many more hours to spend. I like that it came with computer software so we didn't have to try to figure that out also. We have only connected it to the computer a couple of times, but clearly this is a major feature. The quality of the knobs, keys, interface & electronics seems superb. The reason for 4 starts rather than 5 is the cheap feeling plastic. The bottom of the unit is made of thin plastic that actually bows a little when you hold it. It is not a big deal and it doesn't really have any effect on the unit, but for this price they could have made the thing feel solid. Overall, for my limited knowledge this is an amazing synth.

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