The Yamaha CD-S1000 uses the PCM1796 DAC chip.
You know, all CD's and SACD's are not created equal.
Go over to this website and see if some of your CD's and SACD's are listed and look at the DR values of each.
Here is a great example of a CD recording being far superior in dynamic range than the SACD version of the same album.
http://dr.loudness-war.info/album/list?artist=dire+straits&album=
http://dr.loudness-war.info/album/view/103605
VS
http://dr.loudness-war.info/album/view/116588
And yet another SACD recording that has an excellent DR value.
http://dr.loudness-war.info/album/view/70186
Bill