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Appendix Legacy eects 282
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US broad range: Simulation of a classic electric piano speaker.
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Analog simulation: Internal speaker simulation of a well-known British tube preamplier.
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UK 1 x 12 (GarageBand): A British Class A tube open back with a single 12" speaker.
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UK 4 x 12 (GarageBand): Classic closed enclosure with four 12" speakers (black series), suitable
for rock.
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US 1 x 12 open back (GarageBand): Open enclosure of an American lead combo with a single
12" speaker.
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US 1 x 12 bass reex (GarageBand): Closed bass reex cabinet with a single 12" speaker.
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DI Box: This option bypasses the speaker simulation section.
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Amp-Speaker Link button: Located between the Amp and Speaker pop-up menus, links these
pop-up menus so that when you change the amp model, the speaker associated with that
amp is loaded automatically.
Guitar Amp Pro EQ
The EQ pop-up menu and the Amp-EQ Link button are near the top of the interface.
EQ parameters
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EQ pop-up menu: Contains the following EQ models: British1, British2, American, and Modern.
Each EQ model has unique tonal qualities that aect the way the Bass, Mids, and Treble knobs
in the Amp section respond.
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Amp-EQ Link button: Located between the Amp and EQ pop-up menus, links these pop-up
menus so that when you change the amp model, the EQ model associated with that amp is
loaded automatically.
Each amp model has a speaker and EQ model associated with it. The default combinations
of amp, speaker, and EQ settings re-create a well-known guitar sound. You can combine any
speaker or EQ model with any amp by turning o the two Link buttons.
Guitar Amp Pro amplier controls
The Gain, Bass, Mids, Treble, Presence, and Master knobs run from left to right in the V-shaped
formation in the upper half of the interface.
Amplier parameters
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Gain knob: Sets the amount of pre-amplication applied to the input signal. This control has
dierent eects, depending on which Amp model is chosen. For example, when you are using
the British Clean amp model, the maximum Gain setting produces a powerful crunch sound.
If you use the British Gain or Modern Gain amps, the same Gain setting produces heavy
distortion, suitable for lead solos.
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Bass, Mids, and Treble knobs: Adjust the frequency range levels of the EQ models, similar to the
tone knobs on a hardware guitar amplier.
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Presence knob: Adjusts the high frequency range level. The Presence parameter aects only the
output (Master) stage of Guitar Amp Pro.
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Master knob: Sets the output volume of the amplier—going to the speaker. For tube
ampliers, increasing the Master level typically produces a more compressed and saturated
sound, resulting in a more distorted and powerful—that is, louder—signal. High Master
settings can produce an extremely loud output that can damage your speakers or hearing, so
ramp this up slowly. In Guitar Amp Pro, the Master parameter modies the sonic character, and
the nal output level is set using the Output parameter at the bottom of the interface.