Korean, Chinese, Indonesian, everything but an MIJ one. Standards and Customs. I always found them to be very well built and only ever had one with any fret issues. I know they've obviously used different pickups over the years and that's been their downfall for me. The MIC Standard Pro models last 5 or so years have for me been the best sounding models ever. No idea what the pickups are but I really like them. All that said, the Oct 2001 Epi LP Custom I picked up yesterday is the best Epi I've ever had. The fit and finish are as usual top notch, but the pickups in this one jut sound great. Not muddy, boomy and bassy like so many others I've had. It's got some weight to it like an LP should, the fretboard and frets are perfect, and it's gorgeous on top of everything else. It's literally 20 years old and the gold hardware isn't tarnished. The bridge is a Tone Pros which I guess a previous owner installed.