Amplifiers; digital amplifiers; loudspeakers with built in amplifiers; cabinets for loudspeakers; loudspeaker cables; loudspeaker cases; loudspeaker systems; loudspeaker mounting brackets; loudspeaker docks; loudspeakers [audio equipment]; amplifier cables; electronic amplifiers; digital to analogue converters; audio- and video-receivers; converters; plugs [electric]; connectors for electrical cables; adapters for electric plugs; cable adapters; cables [electric]; headphones; audio cables; audio apparatus; audio amplifiers; hi-fi audio apparatus; hi-fi-apparatus; radio receivers; needles for record players; tone arms for record players; turntables for record players; remote controls; radio receivers for remote controls; radio transmitters for remote controls; preamplifiers; power amplifiers; output stages; integrated amplifiers; audio players, in particular multi-source players; receivers; A/V receivers; DVD players and optical storage media players; functional modules for function extension of audio equipment, in particular phono-modules, pre-amplifier modules, sound control modules and signal processor modules; loudspeaker membranes; cables for optical signal transmission; cables for electrical signal transmission; hi-fi compact systems; record players; record player accessories; record brushes for record players; weights for record players; dust covers for record players