jafant,
One of the main reasons I bought the SA-10 was when I auditioned it at home for 5 days, I was able to play my 5 disk changers through it and the sound was nearly as good as the SA-10 playing the CD. Plus the CD playback was as good as SACD, without the odd 'no room present' of so many SACDs. (so all the ambience remained, even though the SA-10 turns it all to DSD to play it.)
With that I was sold.
So I can use changers to wear out daily playtime, and save the SA-10 disc drive to play only when I really want the last possible ounce of perfection.
The SA-10 really does do digital better, Particularly the high frequencies and upper mids, plus better impact all frequencies, and solid edges of notes) even from a second hand changer via Toslink.