The Atlas Sound TSD-PA10VG Mono 10W Power Amplifier is a single channel global amplifier that can deliver up to 10 watts into a 4 or 8 ohms, 25, 70, or 100 volt speaker load with a balanced mono phoenix style input. The PA10VG draws 2.8 watts when in idle. The front panel has an input level control as well as power, signal, and peak LED indicators. A external power supply (available separately) is required for operation.