Reverb Level - This control adds Reverb to the preamp/effects mix. It simulates the spring reverb pan
found in vintage tube amps. The Reverb Level is independent from the three Effects controls.
Effects Level - This control adds the effects section and mixes it into the main signal. Eight different
effects are available. This control does not affect the Reverb Level.
Effects Program Select - This switch will select any of the eight different effects.
Effects On/Off - This switch engages the effects section. The Footswitch over-rides this switch when
it's plugged into the amp. This switch does not affect the Reverb Level.