If you're using the power supply, the output jacks from the DS-5 are one pickup per jack. Bass = neck p/u and Treble = bridge.
If you remove the 5-pin jack you'll loose the external power and be forever dependent on batteries giving only 40 hours play per pair.
If the quarter inch jack is wired stereo (was on older instruments), you just need to get a Y cable to be able to drive separate amps. Again, the split would be by pickup. It might even be easier to wire a stereo 1/4 inch jack in than to replace the 5-pin.
Just some thoughts....
C-Ya..........wayne
