Audio-Technica ATW-T1001 System 10 Wireless Bodyback Transmitter BlackAudio-Technica’s System 10 is a digital high-fidelity wireless system designed to provide performing musicians and presenters with advanced 24-bit operation, easy setup and clear, natural sound quality. The ATW-T1001 UniPak is the essential link between your lavalier, headset, and guitar/instrument transmitters and your System 10 wireless system.