Audio amplifiers; Audio circuit boards; Audio electronic components, namely, surround sound systems; Audio equaliser apparatus; Audio equalizer apparatus; Audio equipment for vehicles, namely, loud speakers for automotive audio systems; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Audio headphones; Audio processing equipment, namely, limiters and compressors; Audio speakers; Audio speakers for automobiles; Audio transmitter units; Audio- and video-receivers; Audio-frequency transformers; Audio-receivers and video-receivers; Audio-video receivers; Boxes specially adapted for housing audio equipment; Computer software for manipulating digital audio information for use in audio media applications; Consumer electronic products, namely, audio amplifiers, audio speakers, audio receivers, electrical audio and speaker cables and connectors, audio decoders, video decoders, speakers, power conversion devices, power converters, and power inverters; Distribution amplifiers for audio and video signals; Electric audio playback units; Electronic interconnecters for audio and video signals; Electronic products for the manipulation of the frequency, time, and amplitude characteristics of audio signals, namely, audio processors; Equalisers being audio apparatus; Equalizers being audio apparatus; Matrix switchers for audio and video signals; Signal processors for audio speakers; Software to control and improve audio equipment sound quality; Vibration dampeners for electronic audio equipment