I am not sure that this is model PB – 325. However I believe it to be based on the fact that I found a sold listings that looked almost identical to this unit. It is on and sold for $370. The only difference I saw between the two items were a couple of tubes. I am not sure of the wattage output of this unit. This item I am selling as is. Or for parts. It is completely untested. I did not even try to plug it in. All I have done is try to remove some of the dust. It was very dusty and could still use a further cleaning. Please view pictures very carefully before offerding. I have tried to post some good ones for you. Note that the top cover is not straight. It does have some bends in it. Also note that it appears to be missing a knob on the gain control. The weight on this item is about 21 pounds before packaging.