Funny you mentioned music hall 25.2. I was just reading about one being modded in this blog. It seems to be a popular choice for DIYers which means the music hall 25.2 has some hidden potentials.
http://bursonaudioblog.blogspot.com/2009/12/music-hall-dac-252-upgrade-with-burson.html
http://bursonaudioblog.blogspot.com/2009/12/music-hall-dac-252-upgrade-with-burson.html