Audio-Technica's 700 Series ATW-701/H Wireless BodyPack Microphone System Freeway wireless delivers professional features and sound quality unheard of in its class. These easy-to-use wireless systems feature eight selectable frequency coordinated channels, diversity operation for increased range/reliability, automatic frequency scanning and Tone Lock squelch. This system is also designed for guitar hookup. For multiple-mic applications, as many as eight systems may be used together.