the t.bone TWS 16 GT 863 MHz - 16-channel UHF wireless system, 9.5" diversity receiver, GT plug-on guitar transmitter, 16 switchable channels with 14 frequencies (863.125MHz - 864.875MHz), up to 2 parallel systems, switchable squelch, XLR & jack output, external power supply (DC 12V/500mW). Accessories included: 19" rackmounts (for 2x TWS16), 1m XLR-jack output cable, transmitter requires 1.5V AAA batteries. No licence needed, free to use all over Europe.