APHEX Systems 204 Aural Exciter® - Optical Big Bottom® Anyone have any experience with this device? I found one on craigslist for $150 and price wise that's pretty decent. Just curious if anyone knows anything about this processor and whether or not its worth the cash. I primarily record hip hop vocals and rarely singing and I am looking for something to make my highs shimmer a bit more. The low end I am not particularly worried about however, I do occasionally record this kid who plays bass so if anyone has experience with the low end of this product that would be helpful as well.