Wireless Mic System for Brass & Wind Instruments. Spider Suspension Isolates Unwanted Mechanical Vibration. Sub Miniature Guitar Transmitter with Clip on Condenser Microphone. Powered by 1 AAA Battery. UHF PLL 16 Pre-Set Selectable ChannelsCarrier Frequency: 863-865MHz. This truly ingenious system from JTS enables you to use a wireless Mic with either brass or wind instruments thanks to a very versatile condenser Mic fitting. The receiver is equipped with either a balanced XLR output or unbalanced 6.3mm jack output.