Pros: very impressive
In a quest to improve the monitor 10s, I removed the unsightly coiled cable which always kinked up.
I replaced it with my Beyer DT48 coiled cable and junction box and then built a bracket for the triangular Beyer box and attached all to the left side of the headphones. Inside is a small pcb board and it made soldering all together very simple. Works fantastic. To improve the earpads, I used the Beyer pads which I attached to the pioneer ear frame using Barge cement.This gave me the proper spacing and really improved the sonic quality and appreciation of listening. The older Beyer earpads make a better fit and are available.