Carbon sheet and glue, so much for technology.
All rods are handmade.
What matters is taper, it either suits you or it doesn't, whether it be 1000 or 50 bucks.
Heck my favorite rod for casting is built on a $30 no name blank, 3wt 6'6". Before it I had a 3wt built on a $250 cts blank. Every time I fish with these two rods the cheaper one gets most action while my friends try to "feel" what top of the line blank can do for them. Yes I out fish them every time
