Kenwood KA-1000 vintage super-integrated- The Age Of Plastic...

That heat pipe arrangement reminds me of an amp I bought while out at school in the States - a Sony TA-F55. I'd been working on a building site for the holidays and there was stereo store on my cycle ride back home. I would sometimes drop in and dream of owning some of the kit on display. On my last day of working on the building site, with my pay in my pocket, I again dropped by the store and ended up buying a Sony TA-F55 which was being discounted to make way for something new and not quite so interesting to my eyes. The Sony was a good looker and very slim - supposedly the slender profile achieved thanks to the use of a heat pipe. It was a good little amp that lasted me a few years, although the light behind the volume indicator gave up not long after the warranty expired..

 

I had a Sanyo P55(I believe it was), that had cooling very similar to the above. Sometimes after a nice long listen at higher levels than normal, during quiet passages of music, you could hear the "bubbling" in the pipes as it did its thing. I also had the matching preamp and tuner, was a nice combo really for the day.