GS30G is with luxurious design of case,2U alloy panel.,humanized handles.it is applied in places where need high quality of devices,such a examination rooms,airports etc. It can switch the broadcast to the spare device when the host is in malfunction .4 channels of main audio amplifiers,,1 channel of spare audio amplifier.when one of the four main audio amplifiers is failure,the device will switch the the broadcast to the l spare audio amplifier.,the switch can be controlled manually or automatically.
