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 ...

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 ...

Also, just because it is portable doesn’t mean it has to be used outside. You can plug it into the wall and use it as your take-anywhere PA. We’ve all been at open-mic nights where we wished we had ...