MCDs are from the same era as MCAs. We never got them here in the USA. A little lower in the Yamaha roster than MCAs. A different grade of maple was used instead. They sort of became what’s now known as the Tour Custom in the USA, but were made in Japan at the time.I, too, had never heard of the Definitive line! Seeing the link, they do look like my Maple Custom Absolute drums I had about 20 years ago. Just proves that everything "old" is "new" again! So, it would appear that marketing just gave it a new name with "Definitive". I'm sure they are great drums!