There's a review of the 2B SST in issue #77 of UHF Magazine. It was postive review. They compared it to their review of the original 2B from many years ago.
There is no mention of the highs being bright or unnatural to their taste; however, it may be bright to your taste. I do not know what your reference is, or what your preferences are.
A couple of quotes: "Brass was bright but not hard..." (pg. 36); "If an amplifier is at all harsh or strident, not to say downright flinty, we'll spot it right here. But we didn't. It still sounded like a Stradivarius, with no hint of screechiness..."(pg. 35)
There is no mention of the highs being bright or unnatural to their taste; however, it may be bright to your taste. I do not know what your reference is, or what your preferences are.
A couple of quotes: "Brass was bright but not hard..." (pg. 36); "If an amplifier is at all harsh or strident, not to say downright flinty, we'll spot it right here. But we didn't. It still sounded like a Stradivarius, with no hint of screechiness..."(pg. 35)