Amplifiers being audio apparatus; Analogue to digital audio converters; Apparatus for transmitting audio signals; Apparatus for use in audio-visual communication; Audio amplifiers; Audio apparatus; Audio apparatus for vehicles; Audio cable; Audio cable connectors; Audio equipment; Audio processing apparatus; Audio products for use in vehicles; Audio signal level controlling apparatus; Audio signal processing apparatus; Audio speakers; Audio speakers for automobiles; Audio speakers for home; Audio testing apparatus; Audio timers; Audio transmitter units; Audiovisual apparatus; Audiovisual devices (apparatus); Car audio apparatus; Car audio instruments; Control apparatus for audio signals; Crossover networks for audio apparatus; Digital audio signal processors; Electrical apparatus for the transmission of audio signals; Electronic apparatus for home use with audiovisual playbacks; Electronic audio apparatus; Electronic audio signal processors for compensating sound distortion; Electronic units for transmitting audio signals; Headgear adapted to secure audio electronic apparatus to the head; Headphones for audio apparatus; High fidelity audio apparatus; Integrated audio amplifiers; Signal processors for audio speakers; Sound and vibration absorbing and damping fittings and feet, especially adapted for use with audio equipment; Speakers (audio equipment)