So I've had a little more time with these Noble Maple Pearl Sage with silver internals since John handed them to me 7 weeks back. The over excitement has faded to more practical view.
I find them to be rather neutral sounding (compared to other IEMs I'm familiar with). The sub bass isn't overwhelmingly rumbling, and starting from the mid bass, they're tight. To my ears, very representative of what the bass is intended to be by the mastering engineer of the track. It captures the rendering and layering of the bass without adding further to what is in the original musical track. Moving to the midrange, it is full and robust. Vocals are crystal clear with full transparency. Moving up to the treble region, the they are airy and extended however without any hints of siblance at all. The Sage caps it's trebles just at the right point where there's sufficient extension without sounding hissy nor strident to my tastes. As I had this Sage running for some time, the trebles are very smooth, I don't hear any grittiness at all.
In terms of detail representation, it is very resolving to continue to wow me. I do have another IEM that's more resolving but that's $3000 and is in different category altogether so that wouldn't be a fair comparison. But the Sage does set the (my?) standard on how much I should expect out of detail/resolution for its asking price range (assuming this Maple Pearl Sage is the same price as it's aluminum brother). The soundstage and 3D imaging has a very intimate presentation as though it's a personal performance for the listener. I do have other IEMs that seem to create a larger virtual space however as a side effect those IEMs would have somewhat more extended decay at various portions of the frequency (primarily the low end) and is less "tight" compared to the Sage.
Ergonomically, this Sage is a blessing - it's small, light, pops in your ear and disappears. It's funny that in this modern day and age as more drivers get squeezed in or hybrids with 8mm dynamic drivers and multiple BAs get put into a housing, audio enthusiasts have gotten more and more accustomed to larger IEMs but the Sage feels nostalgic of how one could have good sound in a more traditional small housing.
If these Maple Pearl Sage is priced the same as their aluminum housed ones, it's brilliant value for money in these modern day escalating prices.