The Grateful Dead’s Wall of Sound and the Quest for Audio Perfection,” which hit shelves last week, offers the first ...

Air Microphone is a US$0.99 app that uses AirPlay to connect your iPhone to an Apple TV or AirPlay-equipped amplifier to give you a wireless microphone. The app is not hard to use. After launch ...

An audio preamplifier is to be developed for use in a small portable public address (PA) system. The preamplifier will have a microphone input, and its. Aspencore network. ... The input to the first ...

(Public Address system) A sound amplification system comprising a microphone, amplifier and speakers. Primarily used for speech, PA systems are widely used in schools, auditoriums and sports ...