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Blue 3


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Blue III
What is it?
Operating System Availability
Operating System Latest Version
System Requirements
PC: VST3, 32 & 64-bits VST and 64-bits AAX for Windows 7 or higher
(Note: PC AAX for PT 12 or higher)
M1 ARM processor compatible.
Serial/license system with activation whilst registering the product
The activation system is offline, which means that there is no direct connection between the plugin and the robpapen.com homepage.
The software can be installed on 2 of your own computer systems.
Minimal computer display resolution requirement: 1440x900pixels
Soon compatible with the NI NKS system (early 2023)
System Requirements
Mac: 64-bits AU, VST3, VST, and AAX, for OS-10.13 or higher.
M1 ARM processor compatible.
Serial/license system with activation whilst registering the product
The activation system is offline, which means that there is no direct connection between the plugin and the robpapen.com homepage.
The software can be installed on 2 of your own computer systems.
Minimal computer display resolution requirement: 1440x900pixels
Soon compatible with the NI NKS system (early 2023)
License & Installation Method
Voucher / Code for redemption on other website
Tell Me More
For related news items, downloads and more please see the full KVR product page for
Blue 3

When it was first released in 2005 'BLUE' already reflected Rob Papen's cutting-edge, creative, and — most importantly — musical approach toward developing virtual synthesizers. Rob Papen himself called it 'Cross-fusion synthesis' because it covered both Subtractive and FM synthesis in one creative concept.

With its successor BLUE-II, the 'Cross-fusion synthesis' was also expanded with a creative range of samples and the highly versatile XY pad.

The concept for BLUE-III still remains true to that ethos with even more added sound dimensions and features to its extended name. Firstly adding our own take on 'Karplus Strong String Model Synthesis', new 'Waveforms', new 'Filter types', a new range of creative 'built-in Samples', and lastly the option for you as a user to load up to 6 samples inside each Preset.

BLUE-III's GUI has received an overhaul including many different sizes, the XY pad is now always on the front panel. The audio engine has received DNA from our virtual analog synthesizer B.I.T. resulting in unsurpassed audio quality.
Lastly, of course, this amazing instrument is shipped with 5000+ Presets by Rob himself and well-known industry sound designers.

BLUE-III is a phenomenally powerful virtual instrument to behold and represents an amazing journey into 'Cross-fusion synthesis'.

Main features:

  • 16voice Cross-Fusion Synthesis Synthesizer.
  • FM synthesis, Wave & Phase distortion, Virtual Analog, Spectrum Waveforms, Karplus String Model, and Samples.
  • Over 5000 Presets in various music styles.
  • Bank Manager.
  • GUI is available in sizes 100%, 125%, 150%, and 200%.
  • Animated dials and faders.


  • 6 Oscillators with Algorithm control for FM synthesis or other routing combinations.
  • Analog-modeled waveforms, Spectrum Waveforms, Karplus String Models, and Samples.
  • Granular on a select range of samples.
  • 6 User samples per Preset can be loaded.
  • User samples with layer options included velocity split and keyboard range split.


  • 2 Filters with different routing options, and serial or parallel mode.
  • 6dB Hi-Pass and Low-Pass Filter.
  • 12dB Hi-Pass, Low-Pass, BandPass, and Notch Filters in 3 different characters Type 1, Type 2, and Zero Latency.
  • 18dB Hi-Pass and Low-Pass Filter.
  • 12dB Hi-Pass, Low-Pass, BandPass, and Notch Filters in 3 different characters Type 1, Type 2, and Zero Latency.
  • 36dB Hi-Pass and Low-Pass Filter.
  • Comb Filter Positive, and Comb Filter Negative.
  • Vocal Filter, Formant 2 Band Filter, and Format 4 Band Filter.
  • Ring Modulation, Frequency Shift Positive, and Frequency Shift Negative.
  • Amount control for Filter Envelope, Velocity, Keyboard Tracking, and Modulation Wheel.
  • Panning and Volume control.


  • Always visual except for the Sample Page, and Bank Manager Page.
  • Main Volume Envelope with Attack, Decay, Sustain, Release.
  • Detailed Envelope features are available in the lower midsection.
  • Velocity control and Main Volume control.


  • XY pad with record option and tempo-based option. Vector mode for controlling the Oscillator 1-4.
  • 4 MultiEnvelopes with up to 15 sections and tempo-based and loop features.
  • 14 LFOs with default destinations, and 4 free LFOs.
  • Modulation Sequencer.
  • Keyboard range and Velocity range modulation source.
  • Modulation Matrix with Advanced mode.

Play Modes:

  • 16voice Polyphonic.
  • MPE Poly mode.
  • Mono, Mono Low, Mono Hi.
  • Legato, Legato Low, Legato Hi.
  • Portamento modes with time or rate control.
  • Sequencer.
  • Arpeggiator.
  • Chord memory with up to 8 notes, velocity, panning, strumming, and tempo-based option.
  • Unison modes available are 2 up to 6 Voices, 2 and 3 Octaves, 2 and 3 Special.


  • 32 Steps.
  • 4 Free Rows can be used as a source in the Modulation Matrix or FX section.
  • Ratcheting modes.


  • Monophonic Sequencer with 32 Steps.
  • Per step waveform selectable.
  • Ratching modes.


  • 4 FX with various routing options.
  • 34 top-notch FX types.
  • 2 modulation slots per FX.


  • 6 user samples per preset.
  • Granular for the single samples.
  • Layer options for the 6 user samples, included split points and velocity split points.

Bank Manager:

  • Preset section with Bank selector section.
  • Order by Date Preset listing option.
  • Find option.
  • Search Category option.

Back Panel:

  • Various Global settings, also appearing the main GUI Control Menu.
  • Global tuning option.
  • Tuning Scale options.

{See video at top of page}

User Reviews Average user rating of 5.00 from 3 reviews Add A Review
Blue 3

Reviewed By FarleyCZ [all]
February 24th, 2012
Version reviewed: 2 on Windows

Version 2? Oh boy, it's good! FM8-like matrix is there! (Behaves a bit differently, but anyway!) All OSCs have all possibilities now as CPU power is higher nowadays. It has some nice samples in OSC's and it can use them to modulate or be modulated! Proper stereo unisono. More FX slots, more FXs. I can play with this thing for looong hours.


It's quite time ago when I've got copy of Blue from second hand. I didn't understand it back then, so I wasn't using it untill about four months ago. Then I rediscovered it and love it! :)

I want to start with a sound of it. At first sight it might seem a little bit "unstable", "not thick enough" and it's true for some uses. Imho It's not the best synth for subbasses for example. But when you dig in and use it's FM engine, you discover amazing sonic pallete. Someone somewhere called it cinematic. Can't agree more. It has some richness, something that just "tells the story" you play. It's especially handy when you have big track full of background layers and no freaking clue what to give on the top of it.

Another use is as really pleasant substitution for FM8. Especially now when Dubstep is wub-wub-wubbing everywhere, FM8 becme known again. Blue can do lot of similar sounds and it has it's own "extra" charater that diverse it from FM8 pretty well. Again, it just can tell the story. Emotionally. Can't describe it well. Just demo it. :) And as a bonus, it's sawtooth sounds much better then FM8's.

Handling of this synth is bit confusing at first, but when you get yourself around what FM is and how it works, it becomes pretty clean and quick. (Unless you're not preset hunter. Then it doesn't really matters...)

Featurewise also crazy. Not many synths alows you to tune precission of every single OSC's for example. :) Modulations are also great. Those multimode envelopes are really cool. ...and so on and so on. :)

Support is amazing. I've found a little bug it was performing with Ableton Live. Contacted guys, Jon opened those 6 years old codes and fixed it for me in literally no time. (2 days for bug fix like this is really a lightspeed) Bugfix was also included in next update.

Only bad thing is unisono engine that is oldfashioned and mono. But I've got a little "oficial-ish" roumor that version 2 is in planning, so no "dev-poke" point down thistime. :) (but it was close :p)

Summary? Well I believe it's one of most overlooked synths ever. It can really bring colours to your songs, which is amazing complment for all this "sometimes too clean" NI synth stuff everyone's using lately. Great sound, great possibilites, great FX, great developers and amazing potential to the future. Can't go otherwise than full score.

Read Review
Blue 3

Reviewed By Feng [all]
July 9th, 2007
Version reviewed: 1.6.3 on Windows

Blue is an extremely versatile beast. It is able to produce an enormous sonic palette, and it's comfortable with all kind of sounds. Its main strength, in my opinion, is the extreme flexibility, due to infinite modulation possibilities, very flexible routing, the number of oscillators (six) and the waveforms to choose from (hundreds).
USER INTERFACE: Clear, logical, one can spend a lot of time programming without having eye stress.

SOUND: As I said, Blue can cover any sonic world with professional result.

FEATURES: That's where this synth really stands out. It has six oscillators that can be configured in a lot of ways. They can modulate each other with FM or sync(with various configurations possible), their output can be mixed as a normal analogue synth and any in between configuration is possible.There's also the possibility of waveshaping on any oscillator. Then the real strength is the modulation matrix, where you can almost freely set the modulator and the modulated parameter. There are step sequencers, multi point envelope, many lfos. Two filters are included. You can choose freely the routing. For example you can set two oscillators on filter A and other four on filter b. These filters are really responsive and sound good. An extensive effects section, with really good FX completes the picture. A fully customizable arpeggiator is included.

DOCUMENTATION: Although the synth interface is really clear, its enormous possibilities makes you want to have a look at the documentation which is clear and well written.

PRESETS: THey are from Rob Papen. Wonderful!

CUSTOMER SUPPORT: Incredible, Rob and Jon are making a perfect work. Any request is answered really soon.I had all my questions answered tipically within a few hours from posting them .

VALUE FOR MONEY: For 200 $ you have a powerful, wonderful synth. So again I have to give it the maximum.

STABILITY: Never had problems.

One more thing I want to underline is that BLUE has been considered a CPU hog. Obviously it depends on the complexity of the patch, but I find it in line with most of the modern beasts. WIth my athlon FX 4800 most of the patches take around 10% CPU. So it's not light on CPU, but it's definitely not a CPU HOG! What's more, you can reduce CPU by reducing oversampling!
Read Review
Blue 3

Reviewed By Xiritam [all]
July 7th, 2007
Version reviewed: 1.6.3 on Windows

Kind of surprised that nobody reviewed this synth.
BLUE is a very very nice synth, it got nice filters, Sound is clear and clean and it became one of my go to synth if i want lush pads, warm squelchy basses and phat leads ( it really got a lot of good sounding pads basses and leads).
Its well worth the price, just like any other synths from Rob Papen and i recommend that you get this one.
One other thing i love about this synth is its interface.
Blue and White is a very good combination, makes you feel comfortable when you look at it.
About the sound engine, it got 6 OSC with tons of waveforms.
Filters are very nice sounding, having 13 types of filtering including VOX (love it),from 6 to 24db lowpass highpass bandpass notch, ring and comb.
This synth has a lot more features like the Step seq, Arp, FXs, Multi-Envelopes, fm routing, You just cant go wrong with this synth.


User interface - Very cool and clean interface, everything is organized, very userfriendly.Love the colors.

Sound - Breath taking Excellent professional Sound.

Features - A lot features. See above.

Documentation - it has manual anyways you might not need it.
This synth is very easy to use.

Presets - So many good sound presets. It got a lot of banks with tons of presets.

Customer Support - i dont know never had problems with it so i never had the need to ask for their help :p

Value for Money - Very worth it.

Stability - It never crashed my pc and it is very cpu Friendly. A bass presets takes about 2 % cpu load and pads 8 % ( using an amd athlon 3200+ single core cpu )
Read Review

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