Thanks Ted, let me know if/what you learn. I haven't been able to find much. BTW, the list price for the 905 is several hundred more than the 885 Pre Pro, so that's why I thought the Preamp sections might be the same (ie the additional MSRP of the 905 was due to the amp). My earlier post refers to simple market dynamics. There are several vendors for the 905 receiver, so the price I can get it for is significantly below MSRP, while the 885 is still scarce and the only place I've seen will put me on a 2-4 week wait list for MSRP. THus, I can get the 905 sooner and for a few dollars less than the 885. I'm just trying to figure out if I'm missing something here...