Hey ramses, thanks for your tips.
I know it can be very loud with RME, there is really no complain there, so not saying the RME can't deal with them.
I played with treble/bass, EQ, loudness and even hi-power in manual, but I think RME does a good job setting it up automatically
Just wanted to make sure what others experience with this headphone or how they tweak their RME ADI-2 DAC with it, the reason for my post is my ignorance with these type of headphones with such high impedance and how to deal with them. Santa Claus brought them!
Anyways searching I think I found a very good description of how they sound and matches by subjective perception, although I couldn't put it into words so adeptly:
"Bass is there but not in abundance. Those looking for thumping powerful bass will have to look elsewhere. The DT880 is somewhat lacking ‘body’/’grunt’/‘fullness’ to its sound. Mids is what this headphone is all about. The mids sound very realistic and clear and with the right amount ‘warmth’. The DT880-600 is overly ‘detailed’, which as a result, also leads to sibilance with a lot of music. With classical music this isn’t really much of a problem. There is no offending sound coloration between the upper bass and upper mids that stand out, it sounds very ‘even’. A bit like a ‘warmer’ HD600 but with ‘hotter’ treble.
The treble is elevated and stands out a bit more than with the DT770 or DT990, because the elevated bass in these models kind of ‘masks’ this (many people prefer V-shaped sound). The treble is not harsh but there is a sharp character for sure and with some recordings sibilance (sharp ‘sss’es) are heard. The DT880-600 is a bit artificial and fatiguing when used at somewhat higher listening levels. The DT880-600 has good ‘air’ and instruments are well separated and fairly easy to ‘place’. The stereo image is ‘normal’ in width. Not narrow nor congested but also not super wide.
Because of its neutral character the DT880 could easily be found to be boring to some.
Very well suited for acoustical, classical and Jazz music. Less suited for most popular and rock recordings (lacks bass for this and is a bit too bright).
The headphone reacts quite well to EQ which is a good thing.
Cannot be turned into a bass monster though."
https://diyaudioheaven.wordpress.com/he … 600%CF%89/
So, it seems I have bass, but not too much, fits in.
I detected sibilance, my first case, because I own two sennheisers (non too remarkable since they are not high end) and a grado 125e and neither do it or have it. Althouh sibilance with the DT 880 is no exagerated.
So it seems I may end up adjusting (lowering) the highs a little only because I'm not much fan of elevated highs (although with these headphones they are not exagerated but they are higher of what I'm used to), other than that, they seem quite confortable to use for a long period of time, and quite confortable listening.
So unless someone has an ideal setup they want to recommend, I think I will just adjust the highs a little for now and the rest will be on auto/flat.