Channels: 24 total line inputs consisting of 16 mono channels and 4 stereo channels.Preamps: 16 discrete Class-A "D-PRE" microphone preamplifiers using an inverted Darlington circuit design.Equalization: Proprietary X-pressive EQ modeling designed to replicate classic vintage hardware algorithms.Effects: High-grade dual digital effects processors featuring Yamaha's studio-standard REV-X and SPX algorithms.Compression: One-knob analog compressors with LED indicators featured on all mono input channels.Routing: Built-in 4 GROUP buses, 1 Stereo master bus, and 6 AUX sends.