Audio and video components and accessories, including speaker cables, shielded interconnect cables, fibre-optic cables, digital audio cables, digital video cables, analogue video cables, interconnect and speaker termination systems, video adapters, video splitters, video couplers, digital video extenders, video and audio isolation devices, video game cables, video and audio power purification devices, AC power cables, AC power strips, turntable feet, and turntable accessories, including turntable mats, tone arms, record cleaning brushes; electrical and scientific apparatus, including radios, receivers, CD players, stereos, combination music units containing audio input, tuner, Internet connection, CD, DVD, or higher optical disc standard, flash memory and external data storage, amplifier and speakers, Internet signal processors for generating music and audio signals, sound systems comprised of audio input, tuner, Internet connection, CD, DVD, higher optical disc standard, flash memory, external data storage, amplifiers, and speakers; entertainment and information appliances containing video displays and electrical connectors constructed to allow rapid installation of RCA, "F", BNC, Euro-F, Antenna, and DB-15 electrical plugs to audio and video cables, including audio interconnect cables, analogue video cables, digital audio cables, digital video cables, AC power cords and parts thereof, without tools; headphones; ear buds