Spire is the first software synthesizer developed by Reveal Sound.

The synthesizer utilizes multipurpose oscillators, filters, and effects units within a digital graphic interface.

Spire combines elements from both Analog and software synthesizers.

The synthesis techniques used by Spire are most easily described as subtractive,[6] although the options available are much more complex than most real analog synthesizers.

[7] There are seven modes available for each oscillator: Classic, Noise, FM, HardFM, SawPWM , AMSync, and Vowel.