I audiotioned both also, and to me the audio refinement sounded better (IMHO). This is always a subjective topic...so go with your likings. You can get the audio refinement here for about $700.00 used. To me, Audio Advisor is a rip off. Do not buy anything at list price. Your dealer should be able to discount the list price and if you don't like the amp, a good dealer should take it back within some time period. Goodluck with your choice and take care.
