Hard to say anything without having heard the amp in question, but it's worth pointing out that the Diezel sound has more bass and low mids than any other.
A PRS which sounds fat will sound even fatter. If you are accustomed to other amps, it may take a while to get used to the sound.
At least that was my experience.
Whenever I switch on another amp now, I always ask myself where all the low end has gone. Our ears and brain get so used to the things we hear.
What we listen to all the time, sounds right after a while.
I have Dimarzio PAFs in my guitars. Those are low output and rather bright.
If there is crackling, I'd replace the tubes, not pickups.