Not sure it matters much. As long as robust manufacturing is involved, the end result really comes down to the engineer or engineering team.
In my system I have a power amp from Italy (Aloia), preamp from Scotland (Linn), phono preamp from the UK (Whest), conditioners from Japan (Acoustic Revive), transformer from USA (ExactPower), Sub from Canada (REL), speakers from USA (Wilson), DAC from USA (Audio Alchemy), transport from USA (Woo Audio), turntable from my basement (USA), power cables & interconnects from the Netherlands (Siltech), Japan (Acoustic Revive), USA (Jena Labs, JPS Labs, Cardas). It’s like the United Nations of stereo equipment, except they get along well with each other.