Alpa 300b Mono's information

Good Day all! Is anyone familiar with the Alpa amplifiers? I acquired 300b monoblocs. They sound really nice. I only know they were made in Korea. Seem well built, no markings on OPTs, caps are USA/UK. Any information would be most helpful. I am beginning to think that they were made in North Korea with the lack of info available.


I didn't find anything either after a fairly exhaustive search.  You might be on your own here, I hope you have a schematic!  You may need it!


they work...I was just curious about them. Although, the schematic will be helpful for any unforeseen future issues.