How can you get more fans on their feet? Add more freedom to your performance— without pushing a single button. Ideal for small and medium stages, GLX-D® Digital Wireless is the easy way to go wireless with less worry.The GLX-D Advanced Digital Wireless Vocal System features intelligent battery rechargeability, the precision-engineered Beta87A vocal microphone capsule for warm, accurate sound and maximum sound isolation and the GLXD4R metal rack mount receiver. For use with GLX-D Advanced Frequency Managers, providing robust RF performance, automatic frequency management and increased channel count with exceptional digital audio clarity and seamless operation.