Apparatus and instruments for recording, producing, transmitting, publishing and/or processing audio and/or video signals; loud-speaker systems; loud-speakers; bass loud-speakers; loud-speakers for medium frequencies; amplifiers, electric preamplifiers and amplifiers; equalizers; audio and video receivers; headphones and headphones for DJs; lighting regulators; stroboscopes; multicoloured or monochrome lasers (not for medical use); audio, video and light mixing consoles; compact disk players; MP3 players; microphones; vinyl record players and cartridges therefor; liquid crystal projection screens, projection screens known as LEDs and digital technology projection screens; electrical cables; loud-speakers for high frequencies (known as tweeters); components of the above products
Electrical and Scientific Apparatus