Just to chime in from a different perspective, I use an Aphex Exciter in my rig but for different reasons. I find that as my strings age and get duller sounding, if I start to boost the exciter I can get back that clear high end that starts to fade. So basically I use it as a way to lengthen the life of my strings. When I put new strings on I keep the exciter essentially off. And as they start to dull I bring the dial up. I like the clean high of end of new strings and this unit works well. However, I rarely put the effect up past about 9 o'clock. It boosts the high end to an irritating level very fast if you over do it. And I also picked this thing up super cheap. Had it not been so cheap I don't think that the effect would be worth it.