here is the signal flow from voice to speaker:
The audio signal goes into the microphone then via radio frequencies which are received at the wireless transmitter box. This can then be plugged into a channel on a mixing desk and treated as a normal microphone input. The audio then goes out of the desk and to the amplifiers and speakers.
One could purchase an Audio Technica wireless microphone from any retailer that sells camera and video equipment. Alternately, one could also purchase an Audio Technica wireless microphone from Amazon or eBay and get a better deal.
Audio-Technica® Wireless Handheld Microphone System has a very long range
Audio Amplifier
The Audio Technica wireless headset microphone is powered by two AAA batteries which will last for about twenty hours of recording.
Unfortunately, I do not think there is a specific length by which wireless audio transmitters transmit and after searching the web for a long time, I have not found anything of it.
The Audio Technica wireless headset microphone uses a standard mini jack that is found on all computers and stereos.
Yes, it is dual channel Wireless Headset Microphone System.
The Audio Technica wireless headset microphone does need its own power source, but the power cord is very small and discreet.
The Audio Technica wireless headset microphones don't have noise reduction, but they are all-around wonderful microphones.
Yes, it is unidirectional.
An optical audio cable is used to transmit digital audio (AC-3) signal from the source to the receiver, such as from a DVD player to a digital audio amplifier/receiver. You can transmit 5.1 dolby digital or DTS surround sound with an optical audio cable, same as digital coaxial audio cable.
American Audio WM-700LAV 700 Channel Wireless Lavalier Microphone System is a wireless lavalier microphone system with 700 different selectable UHF frequencies. It is highly recommended for DJs.