The VU meter displays the amount of input level, output level, or gain reduction from compression, depending on the current Meter Mode button setting. It is calibrated to a reference level of –14 dBFS = 0 VU.
The Input and Output meters indicate input and output signal levels in dBFS (dB relative to full scale or maximum output).
The Internal Clipping indicator (labelled “INT CLIP”) turns red when the signal exceeds the available headroom. Clicking the Internal Clipping indicator clears it. Alt-clicking (Windows) or Option-clicking (Mac) clears the clip indicators on all channels.