This is a Yamaha P3200 power amplifier. It is developed to be a power amp for PA systems, however has good enough specs for your house stereo. It does have a cooling fan. This unit delivers 340 watts into 8 ohms, and 440 watts into 4 ohms, 20hz to 20mhz. It is in great working condition. It does have scratches from being used in a rack system.