Well I have the XLS in play, and I am really quite please with the sound. I am listening to Steely Dan Aja right now, and it sounds as crisp and clear as the SimAudio amp that died. Who would have thought that a $300.00 amp would sound as good as a 2k amp. It just goes to show how much we are willing to pay for a shiny name plate and review. It is truly in the ears of the listener. Thanks to all who helped me in the great decision. I would recommend that anyone debating the purchase of an amp check out this alternative. If doesn't work for you, you have a 30 return without question and no restock fee. -Happy Listening.