Audio input/output interface boxes; audio input/output boxes; audio and video digital interface controllers being audio interfaces; musical instrument digital interface controllers being audio interfaces; audio and video signal processors; computer servers for operating of video equipment and audio equipment for production of radio or television programs; signal amplifiers, sound amplifiers, audio amplifiers, audio and video frequency amplifiers; computer software application for audio signal...

hardware and software for telephone systems to enhance sound quality using parted speaker sound technology

computer hardware and user's guides sold together therewith