The ultra-compact Mackie Onyx 820i FireWire Recording Mixer combines the benefits of a powerful computer interface with the tactile, hands-on control of a sleek, space-saving premium analog mixer. Proven, professional features like three Onyx mic preamps and classic Perkins EQ only accentuate the mixer's ample connectivity and clear-cut workflow. The 820i allows you to send channels, aux sends, or master L/R signals discretely to your Mac or PC for recording.