The IR-100 VoiceLink I 1-Channel Infrared Receiver with Power Supply from TeachLogic is a preamp-only receiver and is designed to be plugged into an existing power amplifier or the input of a multi-media sound system. This receiver is designed for use with the VoiceLink I Infrared Wireless Microphone Sound System. The VoiceLink I Wireless System will expand your multi-media sound system to include voice reinforcement via an infrared wireless microphone. The auxiliary input on the front panel of the receiver allows the input of an iPod, computer, or DVD to supplement the instructional program.