Well.
I'm goona upgrade to a 3-wire battery box since I'm taping ONLY heavy metal loud shows.
Guess i'm being lightly brickwalled when the shows are really LOUD, I taped Opeth this saturday and even the floor was shaking because of the high leves that came out from the PA's... so I'm gonna make this 3 wire battery box in a short lead time. I thought on this upgrade when I ordered extra cable for my CMC-4 (at853), I'm pretty skilled into soldering, designing and electronics in general.
Thanks to poorlyconditioned I'll be able to save the 50$ upgrade from SP and the shippment cost!!