I have a Mojotone Tone Machine amp with a pre-amp out/power amp in type arrangement instead of a feature labeled "effects loop". I use some modulation effects (Deluxe Memory Man, occasional phaser and trem) in my rig and prefer to put them in an effects loop, after the pre-amp, whenever possible. However, they sound overloaded and strange in this amp's "loop". I have a couple of questions about this. First, is this arrangement just a series effects loop without the official name? It kind of seems that way, with all of the signal exiting the pre-amp, going into the effects chain, and then returning via the power-amp input. Second, is there any way to make this kind of loop work better with stompbox-style effects like I use? I've read a little about the Nobels SPX-31, which claims to convert a series effects loop to an adjustable parallel one. This sounds like just what I need, but I don't have access to try one out right now. Are there any other units that perform this function? Thanks for any help!!!