OMNITRONIC PAP-650 is a single-channel PA power amplifier rated at 650 W RMS. It provides one line input and one feed-through output, each available via XLR or 6.3 mm jack connections. The amplifier supports low-impedance loads from 4 to 16 ohms and 70 V or 100 V public-address systems. Features include master level control, signal and fault monitoring, load detection, power control, soft start, overload, overheat, short-circuit and DC-voltage protection. The 19-inch, 2 U rackmount housing uses temperature-controlled front-to-rear fan cooling.