hi ryan,...

answers inline:

1/ There's this weird crackly noise that comes out of both the headphone jack and the main L+R outputs. However, the individual instrument outputs are fine.

check the volume poti,.....

2/ At some point in this beast's history, someone has tried to mod it. There's this 15-pin jack coming out the back. Anybody have any idea what this mod might be Can I take advantage of it Might it be related to the problem of noisy main outs If I wanted to undo it, would that be onerous

There are several different mods for this little beast,....you have to open it and try to figure out wich mods were done,... the cable coming out of your machine is for use with a diy brakeoutbox,..... use a copy of the service manual

keep us informed,

greets

sebastian

www.tecpuls.com

Here are a couple of pics of the jack:

http://i250.photobucket.com/albums/gg241/monkslut/707-1.jpg
http://i250.photobucket.com/albums/gg241/monkslut/707-2.jpg

Thanks in advance for any light you might be able to shed on this!
ryan