The answer is that low levels of distortion and background noise are probably masking the low-level sounds and preventing them from being audible with the clarity you would desire.
This can come from the source (CD player, turntable, etc.), or it can come from the amplifier. Speakers can't resolve what they don't receive from the amplifier, and the amplifier is limited by what it is fed.
In your case, I would say that you definitely need a better amplifier to get better low-level resolution, but not knowing about the rest of the system it is hard to say much more.
I can definitely recommend the Musical Fidelity M3i as an excellent hi-rez amplifier, and also Creek amplifiers. My experience tells me you would almost certainly see a big improvement with either of those.
The OPPO BDP-95 CD/SACD player has pretty much redefined CD sound; for $1000, it blows away every player under $10,000 (including my $6000 Ayre, which WAS the very best you could buy). I can't recommend it too highly. There are also some fairly good ones for around $500, but it is in a whole different class...by itself.
Originally Posted by michaelkingdom
Regarding my "good stuff" I have an Outlaw integrated amp driving the speakers. Good cables, etc. When I play this system at medium volume, the dynamics, sound stage, imaging and general immersion into the sounds is much better.
Brands aside, I'm asking what could cause one speaker to sound more detailed at low volumes than another. I've heard people talk about speakers "coming alive" at certain levels.