Acoustic amplifiers; Audio equalizer apparatus; Audio mixers; Audio switching apparatus; Effects pedals for guitars; Electric and electronic effects units for musical instruments; Electrical pickups for use with musical instruments; Electronic sound pickups for guitars and basses; Equalizers being audio apparatus; Guitar amplifiers; Guitar effects processors; Microphone stands; Microphones; Microphones for communication devices; Pickups for telecommunication apparatus; Sound mixers with integ...