Great watch, thanks for posting it. I always forget about Accuphase but they really do make exceptional gear.
Accuphase Design Concepts
https://youtu.be/ntqPNLZ20MY?si=8jEy-2VG9MjbR2so
As an owner of an Accuphase amplifier I found this video fascinating as it clearly defines the Accuphase design and production philosophy which I believe is unique in the audio industry. Especially interesting is how they green light new models. That conversation begins at around the 29 minute mark.