Electro-Voice MA-100 is a power amplifier that delivers up to 100 watts of output power for all types of sound reinforcement systems. It has a 2-section high-pass filter to protect driver loudspeakers from excessive low-frequency power demands. It also has an active dissipation sensing circuit that provides fail-safe protection for the output transistors. The MA-100 can be installed in a standard 19-inch equipment rack and requires 7 inches of vertical space.