This is the dark grey, ridged version of the BASF Chrome Extra II, from 1990. It falls in between this version, from 1989, and this much more attractive version, from 1992. I wasn’t keen at all on the aesthetics of the version in this post, and I’m not convinced it sounded as good as the others either. It certainly doesn’t sound as nice to me as the ’92 version, which I felt was more in keeping with the Chromdioxids of the early ’80s. I have to admit though, I never tested tapes scientifically. It was just practical use in working situations that formed my opinions.