The Q7-VS Mini Wireless Microphone System for Violin and Viola from AMT includes the Q7 transmitter, an AMT VS violin and viola microphone, and the Q7 Mini receiver that is small enough to fit in your case or travel bag. It operates in the 900 MHz frequency range and can be used to capture audio for violin and viola in live stage, theater, and rehearsal applications.
The receiver is powered by a standard 12V power supply, or for quicker and more portable setups, it can be powered by AA batteries. The Q7 transmitter is powered by a single AA battery. The antennas are permanently attached to make set up easy. This system offers 100 preset selectable channels and syncs with the Q7 transmitter via infrared.