Vanguard is a VSTi and AU

Audio Units

Audio Units are a system-level plug-in architecture provided by Core Audio in Mac OS X developed by Apple Computer. Audio Units are a set of application programming interface services provided by the operating system to generate, process, receive, or otherwise manipulate streams of audio in...

 software synthesizer

Software synthesizer

A software synthesizer, also known as a softsynth is a computer program or plug-in for digital audio generation. Computer software which can create sounds or music is not new, but advances in processing speed are allowing softsynths to accomplish the same tasks that previously required dedicated...

 by reFX. It is a virtual analog synthesizer with 3 oscillators, 32 waveforms, up to 10-times unison

Unison

In music, the word unison can be applied in more than one way. In general terms, it may refer to two notes sounding the same pitch, often but not always at the same time; or to the same musical voice being sounded by several voices or instruments together, either at the same pitch or at a distance...

, a filter with a number of frequency responses, delay and reverb effects and stereo pattern controlled noise gate

Noise gate

A Noise Gate or gate is an electronic device or software that is used to control the volume of an audio signal. In its most simple form, a noise gate allows a signal to pass through only when it is above a set threshold: the gate is 'open'. If the signal falls below the threshold no signal is...

 and arpeggiator, making it very popular among trance

Trance music

Trance is a genre of electronic dance music that developed in the 1990s.:251 It is generally characterized by a tempo of between 125 and 150 bpm,:252 repeating melodic synthesizer phrases, and a musical form that builds up and breaks down throughout a track...

 and goa trance

Goa trance

Goa trance is a form of electronic music that originated during the late 1980s in Goa, India.-History:The music has its roots in the popularity of Goa in the late 1960s and early 1970s as a hippie capital, and although musical developments were incorporating elements of industrial music and EBM...

producers.

Most functions can be automated, such as cutoff frequencies, resonance, ADSR, and LFO. Vanguard works with any VST-capable host.