Have you tried simply exchanging the amps to see if you like the HF of the 2500A better? I upgraded from a 2300A to a 2500A and I thought it a worthwhile improvement.
I am also skeptical of third party upgrades to something as evolved as a CJ design. Better parts may not lead to better sound, because the designer made his choices based on sound as well as price.
I am also skeptical of third party upgrades to something as evolved as a CJ design. Better parts may not lead to better sound, because the designer made his choices based on sound as well as price.