AMP PLUG-IN COMPONENTS
The Mono Amp is the simplest Amp plug-in component. It inputs and outputs a Mono signal, running the output through a single Amp module and then into a single cabinet/microphone filter. The Mono Amp is also the least CPU-intensive of the Amp components.
The Mono DualCab Amp is similar to the Mono amp in that it inputs and outputs a Mono signal. Additionally, the DualCab configuration lets you play the Amp’s sound through two separate cabinets. This allows for many combinations, such as loading the same cabinet with different microphones or using two different cabinets with the same mic.
The outputs of the two sources are then mixed together to a single output. Each cabinet has a phase switch and a volume control. Note that selecting the same cabinet and microphone in both cabinets will result in a normal Mono single cabinet sound. In this case, inverting the phase to one of the two identical cabinets will result in a silent output.
Waves Guitar Tool Rack User Guide.