Electrotechnical and electronic apparatuses and instruments, namely, amplifiers; amplifier enclosures; audio speakers; speaker enclosures; amplifier cabinets; loud speaker cabinets; amplifier electric cords; amplifier carriers, namely, carrying cases specially adapted for amplifiers; amplifier covers; electric switches; electronic amplifier volume and tone controls; microphones; sound recording apparatus; electronic effects pedals for use with sound amplifiers; graphic equalizers; reverberation units, namely, echo sounding devices; signal processors that feature signal delays; electronic echo units, namely, electronic echo sounding devices; electronic stereo tuners; electronic foot pedal controls for use with sound amplifiers, namely, wahwah pedals; chorus and flange pedals; impression and gate pedals; delay and reverb pedals; overdrive pedals; envelope and synthesizer pedals, equalization pedals; expression pedals; multi-effect pedals and boards; octave and pitch shift pedals, phrase and looping pedals; tremolo and vibrato pedals; volume pedals; guitar amplifier simulators; electric foot switches; gateway routers in the nature of computer control hardware and electric midi pickups for use with musical instruments; multi effect boards, namely, guitar effects processor; guitar rack effect processors; talk boxes, namely, electronic effect pedals for use with sound amplifiers; guitar amplifiers and replacement parts sold as a unit; musical instrument power adaptors and electric cords; cabling, namely, connecting electrical cables; mains, namely, audio transformers; tag boards, namely, audio circuit boards; sequencers, namely, sound recording apparatus; echo chambers, namely, echo sounders; mixing desks, namely, sound mixers; amplifiers sold as a unit with amplifier handles, amplifier knobs, amplifier corners, amplifier tube shields, amplifier thumb screws, amplifier legs, audio vacuum tubes