Item arrived on-time in excellent condition and works as described by seller if you take a couple of things into consideration. The 200 Watts spec is the combined ( 2 X 100W RMS ) power of both channels with 2 Ohm speakers. The true RMS power of each channel with a 4 Ohm load is 50 Watts per channel. The amp is specified for speakers between 2 -8 Ohms. With 8 Ohm speakers the RMS power of each channel is 25 Watts. The name " 200 Watt Amplifier " sounds big, just remember it depends on whether it's for each channel and the speakers used.
If you want to run the amp at the 200 Watt max level into 2 Ohms load per channel you need a 12 Vdc power source with at least 17 Amps available. In a car, as long as you use appropriate gauge wires and in-line fuses, this max current is available from the car battery. If you want to use the amplifier at full power as a stereo inside your home make sure you get an appropriate BIG 12 Vdc @ min 20A power supply running off the 120 Vac line.
Having said that, the distortion level of 0,01% and other specs are really very good. This amplifier is capable of excellent sound. Definitely would recommend it to anyone for various applications.