About AIR Music Tech’s Vacuum Pro :
Vacuum Pro is a powerful combination of two separate synthesizer parts that can be stacked, split, and layered to produce big, wide, and fat analog sounds.
Each Vacuum Pro part starts with two wide-range, vacuum tube oscillators that can be synched, detuned, and set to various octave levels. Plus, Quad Detune controls per oscillator make it easy to quickly dial in lush sounds. For an even bigger sound, the built-in Doubling effect instantly widens and thickens up your patch.