On of the Jem signature feature is the scalloped fret board at the upper frets, from the 21st until the 24th fret.
This will give you some better feel and grip on the strings once you play them way up high.
The First time I saw this was when I watch a REH instruction video of Yngwie J Malmsteen who was using a custom made Fender guitar with the scalloped frets over the whole fret-board.
I wasn’t sure if I would feel comfortable with those frets, but I was blown away by the fact how playable the strings are in that position.
Sometimes when I play another of my Ibanez guitars, I am missing the same feeling that this neck is giving me and for some reason, I always fall back to my Jem guitar for soloing.
You would expect, since there is less fret board wood, you will go out of tune when you'll use these notes, but none of this is true......
It just feels right.