HH was a high-quality amp manufacturer based in Britain from the 1960's-90's. I personally rescued mine from a friend-of-the-family, who was taking it to a skip, after it had been in the back room of a church for 15 years, and it has become a very important part of my live setup. I've never seen one in pristine condition (not even after a few hours on the internet), but one thing this amp defintely has is character. It naturally oozes that vintage tone that so many people are chasing. The crazy thing is I've seen so many now being sold for dirt-cheap online. The only slight downsides that I have would be that it isn't a very versatile amp (it just has that one tone that I really like, but is hard to get rid of), and the sheer weight of the thing means that you really need two people to carry it anywhere.