UAD Powered Plug-Ins Manual v5.2 - Just Music

Offset can create great stereo spacial effects. When the filter is in Mono
mode, both filters are still heard.
Tip: Click the knob label (“OFFSET”) to return the value to zero.
Mix
Mix varies the amount of filtering that is occurring. It is not a true dry/wet control;
it mimics the mix function on the MF-101 Moogerfooger. When Mix is at
zero, the Drive/Gain control (and Boost on non-SE version) are still active and
audible.
Setting Mix at zero is the same as setting the Effect/Bypass switch to Bypass.
Stereo/Mono
Output
Output LED
Effect/Bypass
The left and right channel filters are always independent in the UAD Moog Filter.
However, when this switch is set to Mono, the left and right output channels
are summed. In Stereo mode, the left/right separation is retained.
The Output control changes the gain at the output of the plug-in. The available
range is ±20dB.
This LED gives a visual indication of the plug-in output level. The Output
LED is active when Bypass is enabled, but not when Power is off.
When the LED is red, the output is 0dBfs.
When Bypass is enabled, filter processing is inactive. Drive/Gain and Output
still operate in Bypass mode. Enabling Bypass has the same effect as setting
Mix to zero.
If the Free/Sync switch is set to Free, the LFO phase is reset to zero when
Bypass is switched to Effect.
Boost
Boost shifts the “Drive” gain range up a full 20dB, while simultaneously shifting
the Output range down -20 dB. This mimics the behavior of the external
input on the Minimoog.
Note: This control is not available on the SE version.
Power
Power disables the plug-in altogether and disables DSP processing. When
off, the background will “dim” much in the same way the Voyager's panel
does when powered off.
UAD Powered Plug-Ins Manual - 358 - Chapter 39: Moog Multimode Filter