I am trying to set up an audio feed to our greenroom as well as to our lobby and was wondering if there were any wireless transmitter and receiver sets that were both rackmount or had a power supply on each end that plugs into the wall. I have been using wireless mic packs for transmitting and their receivers to pick up the audio, but it eats batteries very quickly. The reason I ask is because I want this set up to be somewhat permanent so I can leave it in place and worry about running cables or replacing batteries. I know this may be a strange question, but any info would help me a ton! Thanks!