Amplifier for wireless communications; Audio amplifiers; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Audio speakers; 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, portable, handheld digital audio devices; Computer application software for digital audio systems, namely, software for producing and/or sharing audio frequency amplifier settings; Computer software for manipulating digital audio information for use in audio media applications; Computer software for use in the encryption and decryption of digital files, including audio, video, text, binary, still images, graphics and multimedia files; Computer software for use in the safeguarding of digital files, including audio, video, text, binary, still images, graphics and multimedia files; Computer software to control and improve computer and audio equipment sound quality; Ear buds; Earphone accessories, namely, earphone cushions, earphone pads, cord management systems, earphone cases, and earphone extension cords; Earphones; Earphones and headphones; Electronic sound mixing, processing and synthesizing apparatus; Handheld computers; Handheld electronic units for adjusting sound levels in hearing aids; Loudspeakers with built in amplifiers; Software to control and improve audio equipment sound quality; Wireless indoor and outdoor speakers