OMNITRONIC MPVZ-350.6 is a 350 W RMS PA mixing amplifier for 100 V and 70 V constant-voltage systems, with six independently adjustable speaker zones. It also supports 4–16 ohm low-impedance speakers. The amplifier provides three stereo RCA line inputs, three microphone inputs, a stereo RCA line output, master treble and bass controls, switchable chime, a priority circuit, and a seven-digit LED level meter. It is housed in a 2 U, 19-inch rack-mount enclosure and uses temperature-controlled fan cooling.