The MA5220 has a total of 3 line inputs and 2 microphone inputs. For use in sound installations where minimal operation is needed the microphone inputs have ducking controls to auto-adjust the line input level. Using the threshold and reduction controls this can be tweaked from a subtle gain reduction to a complete cut, ideal for important public service announcements. The microphone inputs work with both dynamic and condenser microphones with a phantom power switch on the rear panel.

The amplifier generates 200W RMS per channel, via two secure 5 pin screw lock terminals. The output can be changed from a 4 Ohms to 16 Ohms low impedance output, working as a high performance, high-fidelity amplifier while when the constant voltage output is selected (100v or 70.7v) it can work for long-distance multiple-speaker setups. Additional RCA Phono and 6.3mm Jack outputs offer external connection of other amplifiers or audio devices.

Sufficient sound processing is available on board. Independent high pass (40Hz – 3dB) and low pass (16kHz – 3dB) filters on each channel and a master 2 band EQ enable you to ensure the most efficient operation of your speakers, tweaking the sound for either speech or music. The amplifier also provides sufficient protection with an onboard limiter, with the level highlighted via the 8-segment LED on the front panel. A remote screw lock connector also offers the potential to connect an external potentiometer for additional control over the amplifiers features.