The QSC RMX 850a is a member of the RMXa Series of power amplifiers from QSC, the entire range of which stands out due to its durable construction and its powerful and dynamic audio characteristics. High-quality materials make these power amplifiers a solid companion for everyday touring. The power classes of RMX power amplifiers range from 2x 300W @ 4 Ohm (RMX 850a) to 2x 1800W @ 4 Ohm (RMX 5050a). The output power of the RMX 850a is 2x 300W @ 4 Ohm. Various protective circuits such as thermal fuses protect the output stage from overload and damage. The signal input is via XLR, jack or screw terminals, the output via Speakon or touch-proof screw/terminal connections.