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Use the amp EQ controls in GarageBand on Mac
The tone controls of different amplifiers work differently. For example, the treble knobs on two different models may target different frequencies or provide different levels of cut or boost. Some equalizer (EQ) sections amplify the guitar signal more than others, thus affecting the way the amp distorts.
Amp Designer provides multiple EQ types to mirror these differences. All EQ types have the same controls (Bass, Mids, and Treble), but the same EQ settings produce different results based on the amp used. Choosing an EQ type designed for a different amp can change the tone drastically.
