Audio apparatus and electronic equipment for converting signals and formats, namely, digital signal processors; digital signal processors to provide digital audio signal manipulation for use with musical instruments; sound amplifiers; switch control units, namely, electronic proximity sensors and switches; analog to digital converters; digital to analog converters; microphone preamplifiers; headphones; computer hardware and downloadable software programs for audio recording, playback, processing and mixing; electronic audio modifiers; signal processors; microphones; earphones; binaural headphones; tone modules; power controllers; guitar effects processors; amplifiers and audio sound speakers; computer hardware for recording, modeling, reproducing, and transmitting sound; digital interfaces for recording, modeling, reproducing, and transmitting sound; downloadable or recorded computer software, namely, audio modification software, audio recording software, audio modeling software, and audio editing software; downloadable or recorded computer software to generate and control musical tones from microphones; headphones and musical instruments; downloadable or recorded computer software for accessing prerecorded music; downloadable or recorded computer software for use in downloading, uploading, accessing, recording, editing, storing, and playing music, tones and sounds and for providing access to websites containing libraries of music, tones and sounds; downloadable audio recordings featuring music and artistic performances; audio processors for the audio signal manipulation of real or virtual musical instruments; sound amplifiers; electrical apparatus for use with guitars and other purposes, namely, loudspeakers and loudspeaker components and accessories, namely, electric cords, connectors, cables and switches; amplifier controls for volume, tone and effects