Apparatus for recording, transmission or reproduction of sound, images and/or data; apparatus for receiving and transmitting AM, FM, SSB (single side band) and pulse modulated signals in the HF, VHF, UHF, SHF, ultrasonic and infrared frequency bands for amateur-radio and consumer-electronic purposes, including short, medium and FM band radio receivers, (multi-band) frequency scanners, wireless FM modulated microphone systems, FM handheld transceivers; apparatus for recording low frequency audio signals on tape, DVD and CD; apparatus for processing low frequency audio signals and base-band video signals, including mixers, digital echo and equalisers, video enhancers; apparatus for amplifying low level input signals to high-power audio signals, including (fan cooled) disco and public address power amplifiers, car audio power amplifiers; apparatus for voltage converting, including power supplies and adapters (from mains (230Vac) to low voltage AC and DC, low voltage DC to DC adapters, low voltage DC to mains (230Vac) inverters; apparatus for amplifying high frequency signals, including antenna amplifiers; telephones and telephone switchboards; security control panels; passive infrared detectors, observation and surveying apparatus with CCTV and LCD monitors; cable for audio, mains, low-voltage and high frequency coaxial; connectors and adapters for low- and high frequency, including jacks, phone (RCA), DIN, SCART, XLR, coaxial (UHF, BNC, TNC, FME, SMA, radio and TV), banana plugs; peripheral equipment for computers; loudspeakers for HIFI, disco, car and PA purposes; navigation and chronometric apparatus; electronic calculators; batteries and chargers for electric batteries; measuring apparatus, including (digital) multimeters, frequency counters, (digital) clamp meters; electronic soldering irons