Avid Pro Tools Instrument Expansion Pack For Mac ProPro Tools Instrument Expansion Pack UpgradeAIR Music Technology created the original Pro Tools Instrument Expansion Pack, providing a rich array of software instruments to legions of Avid Pro Tools users.Compatible with Pro Tools 10 and Pro Tools 11, the new Air Instrument Expansion Pack includes 2.0 enhancements to its 5 core offerings plus 2 ..