Any experience with Aphex Model 204 Aural Exciter?

I've read some good reviews of this sound processor and I'm wondering if any one has any real experience with it. I'd be adding it to AIFF files on Itunes Computer server -> DACPORT DAC via USB -> BYPASS FILTER AT 80 -> split less than 80 to JL Audio F112 Sub and over 80 to Bryston 4B-SST2 and on to Mag 3.6's (or 3.7's). No preamp in this system since volume is controlled by the cigar sized Dacport which has worked great for me on other systems. Thanks.