For the modification it's just moving a couple of wires and replacing one of the fx loop jacks. I have the schematics from Boogie if you want them just drop me an email and I'll email them to you. A local amp tech looked at the schematics and said it would take him about 5 minutes to do it and cost about $50. I'm still debating on weither or not to get that done, I'll probably try it without modding it first but I will always have that option open.
a parallel loop splits the signal in to 2 paths, one is a dry signal that goes to the power amp and the other goes through the fX processer then to the power amp...... so what you hear is the combination of the two sounds, therefore you cannot use any modulation fx in the loop (chorus, phayse, flange, or an EQ or compression, ect...) only time based FX such as delay and reverb work really well in the parallel loop. So if thats all you plan on using you should be ok
A series loop sends the entrire signal through the fx loop and then to the power amp, most all effects sound good this way and some times better.
The advantage of the parallel vs the serial is the parallel loop is supposed to be the purist un-moddified sound you can have, the series gets degraded a bit running through a processer (or 2 or 3) and therefore you don't get the 100% best tone possible..... But in most cases you can't tell the difference in tone when running in a series loop, but for recording is where you'd be able to tell the difference.
I hope this helps you out?? I've just learned the difference a couple of months ago so I'm not sure I should be explaining it :lol:
