The 4 channel power amplifier is designed for commercial and industrial public address applications. With four separate amplifier in a single chassis and rated power of 60W per channel which provides a wide selection to meet different size sound system needs. The amplifier is design of rack mount type and 3U height. Balanced line inputs by phone jack, 70V, 100V and 4-16ohm speaker outputs for each channel by phoenix types are convenient for installation when selection different speaker matching. Master volume controls for each control are included. Complete protection includes over heat, over load, clip & short circuit. Indications for power, signal, peak and protection.