Audio effects apparatus in the nature of audio equalizer apparatus; audio switchgear apparatus in the nature of switchgears; volume control pedals; switchgear control pedals; electronic effect pedals for use with sound amplifiers; switchgear pedals for use with sound amplifiers; foot pedals and foot switches for processing, amplifying or distorting sound in the nature of sound mixers; switchgear controllers for processing, amplifying or distorting sound in the nature of electrical controllers...