Tone2 VST AU Synthesizers: Home of the best VST Plugins & AU Instruments

FireBird 2 - now available for free!

After ten years of faithful service, the time has come to set the bird free. Firebird itself has become vintage and even though it's no longer profitable to remain a commercial product, we feel that more people should deserve an opportunity to enjoy this sometimes heavily underestimated synthesizer.
Which is why we decided to release one last update and turn the product into freeware (previuosly $79).  We want to say a big THANK YOU to all customers,  who funded the development of Firebird and the current Tone2 products, by purchasing our software.

Please feel free to share Firebird 2 with all your friends! We hope you'll enjoy working with Firebird for many more years.

Unique & innovative

Firebird is not just another subtractive synthesizer, it uses a unique synthesis architecture to deliver fresh sounds. Its innovative and very easy to use interface provides you with the tools to create impressive patches with a minimal amount of effort. FireBird comes with 437 build-in sounds. Classic VA sounds as well as very special  sounds with Harmonic Content Morphing synthesis are included.

Harmonic Content Morphing (HCM) synthesis

Harmonic Content Morphing synthesis is based on a large, expandable repertoire of standard waves, like saw, pulse, as well as more complex wave material, like multi-waves, trumpets, organs, pads, pianos and voice samples.
These waves are modified by special algorithms, which can alter the harmonic structure.


  • Very easy to program and easy to use
  • A unique sounding  synthesis: Harmonic content morphing (HCM)
  • High sound quality
  • 437 presets included, over 1000 sounds available
  • 84 oscillator types containing 18,000 morphable waveforms
  • 38 different filter types
  • True stereo mode, 4x unison mode, and up to 8 oscillators per voice
  • 23 spectral manipulations or "modifiers" can be applied to the oscillators
  • 21 arpeggiator types
  • 13 effect types
  • Skinable user interface


FireBird provides 84 different morphable oscillator types.  Additionally 23 spectral manipulations or "modifiers" can be applied to the oscillators. A fat knob doubles or quadruples the number of oscillators giving up to 8 oscillators per voice.


FireBird comes with 38 different sounding filter types:
Lowpass (6-40dB), Analog, Vocal, Phaser, Comb, EQ, FM, AM, Resample, Elliptic, ...
FireBird+ provides also more complex characteristics for vocal or M-shape filters. 


FireBird offeres 13 different effect types. The effects section has several reverb and stereo tab delay variations, chorus, ensemble, flanger, and rotary effects as well as combinations.
Firebird comes with an easy-to-use arpeggiator.


A large of additional sounds from Tone2 and 3rd party sound designers is available for FireBird+.

System requirements

Windows XP / Vista / 7 / 8 / 10; 32 bit compatible VST host

Compatible with Windows 10, Windows 8 and Windows 8.1
Windows and Steinberg VST VSTi compatible

Still not convinced?

"...FireBird offers a fresh sound, is easy to use and comes with a new kind of synthesis... the new synthesis method convinces completely...excellent sound...You can create completely new sounds with a few parameter changes... sound design is real fun and offers great results... Don't miss to try!"

"Editor's recommendation, 6 from 6 points... Really impressive work ... Tone2 managed to make a complex technology intuitively usable."

"FireBird is an excellent little synth...captable of producing a wide variety of sounds...versatile synthesis engine.."

Amazona 3/2008
Beat Magzine 11/2008
Computer_Music magazine 08/2006