The INTEGRA III SYSTEM Audio Power Amplifier modules represent years of field proven design work. Each module is designed to incorporate features demanded by some of industries most notable design/consulting firms. The quality and workmanship of these products will not be surpassed anywhere. These power amplifiers will work well in such applications as: monitor speakers, paging speakers, cue speakers, talk-thru speakers, or sound reinforcement speakers. There are three different power amplifiers to choose from. All 3 units will deliver 10 watts RMS into a 4 or 8 ohm load. The difference in the units are the input stage impedance. The third type, the model 884A, has a balanced transformer isolated 600 ohm input. The Model 884A unit is suggested for applications where the program signal is coming from another location. The transformer isolated inputs work well to prevent ground loops in the larger systems. The gain of all units, has a range of +8dB to +30dB, and is continuously adjustable via a trimpot mounted on the corresponding backplane. The input is short-circuit protected. Shorting the input will not harm any of the 3 input types. The output section is overload and thermally protected. Each of the units incorporates a built-in mute circuit. Simply grounding the appropriate pin will mute the power amplifier output.