Bojack - I am a big classical fan and have experienced a very similar problem you describe. In fact, I posted a thread about it on AA. The problem manifested itself in both of my systems, one is a passive pre-Class D amp-Maggies rig, the other is an active pre-Class A/B-box speaker combo, so very different. The posters on AA ranged everywhere from "Maggies suck" (yeah right) to more involved discussion of the problems recording engineers face in recording orchestral strings.
I have a couple of comments:
1) My problem isn't heard with solo violin, which in fact sounds particularly good on my system. It's orchestral violins only.
2) I have improved the sound through shielded A.C cables and jitter control. I would investigate both of these routes. I would look into a reclocker for the Marantz (Empirical Audio and Audio Gd are the competitors in this space). This isn't a complete solution but it's ameliorative.
3) Following up on 2, my current working hypothesis is that the issue is one of dirty power and jitter.
So I think your observation is completely valid and I would approach the solution analytically.
I have a couple of comments:
1) My problem isn't heard with solo violin, which in fact sounds particularly good on my system. It's orchestral violins only.
2) I have improved the sound through shielded A.C cables and jitter control. I would investigate both of these routes. I would look into a reclocker for the Marantz (Empirical Audio and Audio Gd are the competitors in this space). This isn't a complete solution but it's ameliorative.
3) Following up on 2, my current working hypothesis is that the issue is one of dirty power and jitter.
So I think your observation is completely valid and I would approach the solution analytically.