Originally Posted by SilverEars
Just got my NT6, and now I'm curious how much that extra treble would help as I don't think it's that bright. My V3 are more forward than it, especially the bass, which isn't very controlled. As for X5, it's laid back. I'm perplexed why you would think the X5 would be forward. I would say DX90 is forward and warm as it has more bass or aire, and the treble is forward. With the NT6, the DX90 is more appreciable as it tightens the sound. I don't mind the DX90 with the NT6, but with the V3 I mind a bit since the V3 is forward in the bass department and DX90 does push the bass a bit compared to the X5. I feel since X5 is laid back, it sounds clearer with the NT6, whereas the DX90 with it's forward treble, the highend is more pronounced and more noticible.
Maybe I should clarify what I mean by forward. I am talking about the X5's intimate sound stage being presented closer to the band as if in the same room - not that the DAP is anything other than neutral across the frequency range. With a more forward sound stage, the X5 gives me the illusion of a full human sized band at lower more comfortable volume levels. The DX90 requires me to turn the volume up to uncomfortable levels to get that same intimacy and feels like I am in the nose bleed section at lower volumes. That's an exaggeration for effect, but I have a much larger usable volume range with the X5.
But then again, who knows, maybe with my damaged 50 year old ears, I could just be hearing it all wrong.
I should also point out that though our CIEMs share the same 6 drivers, they are tuned a little differently with the pro having an extra crossover apparently supporting the low end for more slam with yours being a little more neutral. I am not sure how those differences play out with these DAPs.
BTW, thank you for being the only other person besides myself to say that the Hiditions are not really that bright. I find my Pro to be extremely neutral and very extended both directions which I suppose can be interpreted as bright by some.