The effects settings include reverb, tremolo, and vibrato, which emulate the processors found on many amplifiers. These controls are found in the center of the knobs section.
Note: The Effects section is placed before the Presence and Master controls in the signal flow, and receives the pre-amplified, pre-Master signal.
Reverb is always available in Amp Designer, even for models based on an amplifier that doesn’t include reverb. Reverb is controlled by an On/Off switch and a Level knob. The Reverb pop-up menu is located above these controls. You can add Reverb to either the tremolo or vibrato effect, or use it independently.
On/Off switch: Turn the reverb effect on or off.
Reverb pop-up menu: Click the word REVERB to open the pop-up menu, then choose a reverb type.
Level knob: Set the amount of reverb applied to the preamplified signal.
You can select either Trem(olo), which modulates the amplitude or volume of the sound, or Vib(rato), which modulates the pitch. Tremolo and vibrato are controlled by several switches and knobs in the effects section. Tremolo modulates the amplitude or volume of the sound, and Vibrato modulates the pitch of the sound.
On/Off switch: Turn the tremolo or vibrato effect on or off.
Trem/Vib switch: Choose either a tremolo (level) or vibrato (pitch) effect.
Depth knob: Set the intensity of the tremolo or vibrato effect.
Speed knob: Set the speed of the tremolo or vibrato. Lower settings produce a smooth, floating sound. Higher settings produce a rotor-like effect.
Sync/Free switch: Choose Sync to synchronize the tremolo or vibrato speed with GarageBand’s tempo. Choose Free to set values with the Speed knob. In Free mode, you can use the Speed knob to set the modulation speed to different bar, beat, and musical note values (1/8, 1/16, and so on, including triplet and dotted-note values).