The unit powers on. I connected a portable cassette unit to the amplifier. It plays through the amp but the volume control has to be turned almost all of the way up to hear it also the sound isn't that good. Selling it as is and it most likely needs a service. Please know that I am not an audio guy and it is possible that I'm not using the amplifier correctly. The amp is in very good physical condition as shown. See pictures for more details.