Heath AA-2500 Amp - Heard of it?

Has anyone heard of this amp, it is not expensive. I bought this years ago from a guy that was employed by Zenith, so I got it for a much reduced price. I was told it was made by Harmon Kardon. It could either be purchased as a kit or whole. I tried a number of amps years ago, 10+ years ago, before finding one better, that was a Forte Model 6. I sold this to my neighbor way back then, I was just curious if anyone else knew of it.