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Guitar pedals and footswitch inside recording room. Close up of guitar pedals and musician's foot tapping on it for different sounds. Macro view
Close up detail of sound equalizer control knobs of a black guitar amplifier. Delay, chours, reverb and distortion knobs.
Analog Level Knob reverb. sound mixer in the studio, automatic knobs on the remote left to right.
Close up detail of sound equalizer control knobs of a black guitar amplifier. Delay, chours, reverb and distortion knobs.
Close-up details of control knobs on the top of a hardware effects pedal made for guitars, synthesizers, and other musical instruments.

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