Freeware SURGE VSTi ist nun Opensource



As of 21th September 2018, Surge stopped being a commerical product and became an open-source project released under the GNU GPL v3 license.

For the existing users this will allow the community to make sure that it remains compatible as plug-in standards and Operating Systems evolve.

For everyone else, this is an exiting new free synth to use, hack, port, improve or do whatever you want with!

Source-code and binaries available on
Synthesizer plug-in (previously released as Vember Audio Surge)

Last updated: 2018-09-24T21:25:49Z

Specifications (v1.5.1a):
Synthesis method: Subtractive hybrid
Each patch contain two 'scenes' which are separate instances of the entire synthesis engine (except effects) that can be used for layering or split patches.
Quick category-based patch-browser
Future proof, comes as both a 32 & 64-bit VST plugin (Windows PC)
Universal Binary for both VST and AU (Mac)
Factory sounds
1010 patches
183 wavetables
3 oscillators/voice
8 versatile oscillator algorithms: Classic, Sine, Wavetable, Window, FM2, FM3, S/H Noise and Audio-input
The classic oscillator is a morphable pulse/saw/dualsaw oscillator with a sub-oscillator and self-sync.
The FM2/FM3 oscillators consists of a 1 carrier with 2/3 modulators and various options.
Most algorithms (except FM2, FM3, Sine and Audio-input) offer up to 16-voice unison at the oscillator level.
Oscillator FM/ringmodulation
Most oscillator algorithms (except FM2/FM3) are strictly band-limited yet still cover the entire audible spectrum, delivering a clear punchy yet clean sound.
Noise generator with variable spectrum.
Two filter-units with arrangeable in 8 different configurations
Feedback loop (number of variations inside the parenthesis)
Available filter-algorithms: LP12 (3), LP24 (3), LP24L (1-4 poles), HP12 (3), HP24 (3), BP (4), Notch (2), Comb (4), S&H
Filters can self-oscillate (with excitation) and respond amazingly fast to cutoff frequency changes.
Waveshaper (5 shapes)
12 LFO-units available to each voice (6 are running on each voice and 6 are shared for the scene)
DAHDSR envelope generators on every LFO-unit
7 deformable LFO-waveforms + 1 drawable/stepsequencer waveform
LFO1 allows envelope retriggering when used as stepsequencer
Extremely fast and flexible modulation routing. Almost every continuous parameter can be modulated.
8 effect units arranged as 2 inserts/scene, 2 sends and 2 master effects
10 top-quality algorithms: Delay, Reverb, Chorus, Phaser, EQ, Distortion, Conditioner (EQ, stereo-image control & limiter), Rotary speaker, Frequency shifter, Vocoder
System Requirements (Windows PC)
A computer running Windows 2000/2003/XP (32/64-bit) or newer
The computer's CPU must support the SSE instruction set. This is supported on Intel Pentium 3/4/M, Core, Core2 and AMD Athlon XP/64/X2 (and newer) processors.
256 MB RAM
A VST-compatible Host application
An x64-compatible CPU, OS and Host is required to use the 64-bit version
System Requirements (Mac)
Requires Mac OS X v.10.3.9 or later.
Any Intel Mac or a PowerPC Mac with a 1GHz G4/G5 or faster CPU
256 MB RAM
An AU or VST2.4-compatible Host application​

Der Synth hat bis vor wenigen Tagen um 150 € gekostet
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