QUAD DAC

Integrated circuits, chips and semiconductors, namely, audio digital-to-analog converter chips used in DVD players, digital video recorders (DVR), DVD recorders, optical and magneto-optical disc players, SACD players, CD players, audio/video receivers, home theater receivers, automotive audio systems, audio pre amplifiers, audio amplifiers, audio/video processors, professional recorder systems, professional mixer consoles, professional digital audio workstations, smart phones, tablets, laptops, personal computers, audio speakers, headphones, headphone amps, wireless headsets for smart phones, wireless speakers, wearable computers, soundbars, smart speakers, software for improving sound quality, software for voice recording, software for smartphones, namely, software that allows users to download music to smartphones, software for smartphones, namely, software for creating and editing music and sounds, and software for smartphones, namely, software to control and improve smartphones sound quality