Yamaha YAS-209BL Owner's Manual page 45

The indicators show the compression level applied for several seconds.
Compression level
Compression
(maximum)
Compression
(standard)
Glows (white)
No compression
Glow (white)
n NOTE
Press INFO to confirm the dynamic range compression level applied to the unit. For
details, see the following:
• "Showing audio information and function settings" (p.33)
Indicators
45
En