Amplifiers; Sound amplifiers; Musical instrument amplifiers; Loud speakers; Microphones; Sound mixers; Downloadable user manuals for musical instruments, musical instrument accessories, amplifiers, loud speakers, and audio equipment accessories; Computer hardware for recording, modeling, reproducing, and creating guitar tones; Downloadable audio modification software programs and audio amplification equipment, namely, guitar amplifiers, bass guitar amplifiers, and speaker systems; Electronic audio modifiers, signal processors, interfaces, tone modules, controllers, effects processors, and effects pedals for use with musical instruments, amplifiers, and sound speakers; Amplifiers for musical instruments and parts and accessories for use in connection therewith, namely, cables, cases, covers, power supplies; Downloadable computer software, namely, audio modeling software; Downloadable computer software to generate and control guitar tones played using musical instruments; Downloadable computer software for use in downloading, uploading, accessing, recording, editing, storing, and playing guitar tones and for providing access to websites containing libraries of guitar tones