I can't speak for the Emotiva but I am using the NAD M15's brother pre/pro the T175HD and I don't think I could be more pleased with the sound quality. Very open soundstage with plenty of depth and a slight warmness while retaining spot on detail. The T175HD can still be had(refurbished) for $1599.00 at Spearit Sound.
http://app.audiogon.com/listings/processors-nad-t175hd-preamp-processor-with-manufacturer-s-warranty-2013-02-18-home-theater-01060
Bill
http://app.audiogon.com/listings/processors-nad-t175hd-preamp-processor-with-manufacturer-s-warranty-2013-02-18-home-theater-01060
Bill