Face - there is something different with class D amps. They tend to play well at low volumes. I noticed it with my Rowland 102 but also read in review of class D amp later. Speakers I use now are 90dB.
Your STI-500 is also Icepower beast.
Dynamics at lower volumes?
Assuming appropriate source material, what technical characteristics of speakers/amps contribute to good dynamics at low to moderate volume levels? Are there are any speaker or amp designs that are thought to generally be inherently better at producing good dynamics at lower volumes?