Difference in Feather razors

[Barbablanca]

I’ve been using a Feather asd2 razor, and recently saw there was an asd1. Was this an earlier version of the same razor? Just wondering. I like my razor just fine, but plan to add a more aggressive razor in the near future.
Jack

 

[nvpliers]

The ASD1 was the first version. But it was in fact, milder than the ASD2.