TOA P-906MK2 is a power amplifier that can deliver up to 60 watts of output power. It has an input port to accept one plug-in module, and a direct input. The input sensitivity can be switched between 100 mV and 1000 mV, and the input impedance is 10 kΩ. The output can be connected to either an 8 Ω, 25 Ω, or 70 V balanced load (transformer output), or a 4 Ω unbalanced load (direct output). The output regulation is less than 0.5 dB (no load to full load) for the direct output, and less than 1.0 dB (no load to full load) for the transformer output.