I’ve just done a search on these. Lots of info on the Line 6 system, not much on the Yamaha guitar spec.
What scale is it? Can you use a regular amp, or does it have a digital output of some sort?
For some reason I thought you had a variax before. I’ve never played one, but I would love to try out some of those sounds. The tones in that vid you posted are incredible, especially the jazzy ones.
I’m also curious as to how the digital tuning works out. There was a (Cort?) model with this feature. You could change tunings mid-song with something like that. DADAGAD chords, change to Concert for a solo & swap back again.
I like Yamaha guitars. I have a silent nylon string model.