Wireless Mic System for Guitar or Accordion. Spider Suspension Isolates Unwanted Mechanical Vibration. Sub Miniature Guitar Transmitter with Clip on Goose neck 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 an electric/electro acoustic guitar or accordion thanks to the interchangeable jack or mic fitting. The receiver is equipped with either a balanced XLR output or unbalanced 6.3mm jack output.. guitar mic-accordion mic-guitar microphone-accordion microphone