Amplifiers; Batteries; Amplifier stands; Audio amplifiers; Audio cables; Audio speaker enclosures; Bass amplifiers; Bass speakers; Batteries and battery chargers; Carrying cases, holders, protective cases and stands featuring power supply connectors, adaptors, speakers and battery charging devices, specially adapted for use with handheld digital electronic devices, namely, cell phones, MP3 players, and personal digital assistants; Cases for music, audio and related electronic equipment, namely, cases for audio tuners, audio receivers, amplifiers, tape players, compact disc players, MP3 controllers/players, audio mixers, audio speakers in the nature of music studio monitors, microphones, audio speakers, compact discs, audio tapes, portable computers, antennas, phonographic record players, audio recording equipment, and the cables associated with all of the foregoing equipment; Guitar amplifiers; Guitar cables; Guitar effects processors; Musical instrument amplifiers; Sound boards; Soundbar speakers; Wireless indoor and outdoor speakers; Wireless receivers and transmitters for portable media players; Wireless speakers