Mono-to-Stereo and Stereo
The Mono-to-Stereo and Stereo Amps share the same controls and graphic user interface, but their input and processing specifications are different.
Mono-to-Stereo is very similar to the Mono DualCab component, but outputs a Stereo signal. So, rather than adding each cabinet’s output to a single path you can flexibly pan them to create a Stereo image from the Mono input.
The Stereo Amp component is actually a dual-Mono configuration. It takes a Stereo input and outputs Stereo. The left input goes through the Amp type to cabinet 1 and the Right Input goes to cabinet 2. Its Pan control can be used to limit the Stereo image width, collapse the Stereo input to a Mono output, or swap the channel outputs by hard panning them in opposite directions.
Waves Guitar Tool Rack User Guide.