Kurzweil K2661 Musician’s Reference Manual page 281

Ratio The compression ratio in effect above the compression threshold. High ratios are highly
compressed; low ratios are moderately compressed.
Comp Thres The compression threshold level in dBFS (decibels relative to full scale) above which the
signal begins to be compressed.
MakeUpGain Provides an additional control of the output gain. The Out Gain and MakeUpGain
controls are additive (in decibels) and together may provide a maximum of 24 dB boost to
offset gain reduction due to compression.
KDFX Reference
KDFX Algorithm Specifications
10-199