An MD Hi-SP recording?

[corsair]

There seem to some kinda gap at the top region in some parts of the music...Lineage is supposed to be this:

Soundprofessionals CMC8 cards > SPSB-6 @16Hz/no roll-off > Sony MZ-RH1 (Hi-SP)

[Five]

I'm not sure what caused that gap but the cutoff is in the right place for a Hi-SP recording