Greets! I bought a used RBX JM2 for dirt cheap, and as it turns out some kid had gutted its electronics and left it barely working... anyway, i want to replace the preamp/electronics but choices for a single MM 6 string pickup seem to be very few. I found this electronic from Glockenklang: http://www.thomann.de/gb/glockenklang_2band_electronic_stacked.htm My question is if this would work with the stock JM2 pickup? More specific, i am unsure about the 'balance' option of this electronic, which would imply two pickups, right? I simply dont know who to ask, i figured there must be tech-minded people on this forum who would know. Or maybe there is a different electronics option i have not yet considered? Much appreciated!