I have a Hartke combo amp that has mostly been relegated to garage “grab and go” duty. One feature it has that is quite handy is the shape control. What is it? Is it a parametric equalizer? A mid frequency sweep? Is it something else? Other than the Hartke attack pedals, is there any other pedal that does the same thing? It really shapes the amps sound unlike any other control I’ve had on an amp.
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