Headsets for use with computers; headsets for use with mobile devices, namely, smartphones, MP3 players, tablets and PDAs; headsets for use with home entertainment systems; wired and wireless audio transmitter units; electrical adapters; audio adapter cables; digital to analog converter; wireless and wired communication devices for voice, data or audio transmission; audio mixer, namely, tournament mixer; USB hardware, namely, audio controllers; downloadable files containing software and programming used for audio settings for manipulating sound; downloadable computer software for managing manipulated sound files; downloadable computer software for the manipulation of sound files; downloadable computer software to improve performance of headsets; downloadable computer game software; headsets for use with game consoles; headsets for use with controllers for game consoles; headsets for use with hand-held units for playing video games other than those adapted for use with an external display screen or monitor.;