Powerful GX 81 system is incorporated with Class D amplifier, 2" tweeter and 8" speaker which bring us exceptional audio performance. lightweight LiFePO4 battery and easy-to carry handle simplify the carriage of GX 81 system. with "voice priority" function, GX 81 will attenuate music and make talkers' voice be clearly audible. Optional passive speaker PA 81E is also available for economical speakON^® connection which makes sound reinforcement extension possible. stunning SPL 109 dB of output charms the crowds to great extent. License and interference free 1.9 GHz DECT technology and exquisite sound performance allow GX 81 system to perfectly be utilized in different events, such as ceremonies, weddings, camps, group recreation activities, house of worship or holy communion.