There is a possibility that this may sound better in your ears.
There are many who think they can replace capacitors and hear improvements.
But, if one tries to be realistic and think the following, the top models of JBL have never been produced in very large numbers. If it is the case that a few capacitors of possibly better quality will give significantly better sound what would it cost JBL?
JBL, which is a very large customer, does not pay the same prices for components as one that buys 10 or 100 pieces.
What would a small extra cost for capacitors mean for the price of the product to the consumer?
Probably nothing.