Audio speakers; loudspeakers, loudspeaker systems and component parts and accessories, namely, transformers, signal processing modules, cables, and connectors for such products and instruction manuals associated therewith; woofers; sub-woofers; audio speaker enclosures; acoustic membranes for incorporation in microphones and audio loudspeakers; sound amplifiers; microphones, microphone cables; headphones and accessories, namely ear pads, volume controls, headbands and cable connectors, headsets and accessories, namely ear pads, volume controls, headbands, cable connectors, booms and microphones; earphones and accessories, namely ear pads, volume controls, ear bands and cable connectors; ear sets, namely ear pads, volume controls, ear bands, cable connectors, microphones and booms; interactive remote control units for audio recording and playback; sound mixers; surround sound processors; signal processors; power amplifiers; computer software to control computer and audio equipment sound quality and instructions manuals sold as a unit therewith; and computer software to improve computer and audio equipment sound quality and instructions manuals sold as a unit therewith