Compatible with Pro Tools M-Powered 8; Mackie Provides Power Mixing to Your Stage or Studio! The Mackie Onyx 1620i Firewire recording mixer combines the benefits of a powerful computer interface with the tactile, hands-on control of a premium analog mixer. Equipped with eight premium precision engineered studio grade Onyx microphone preamps, the Onyx 1620i is great for live sound reinforcement or studio recording, all in a durable road-worthy package.