Originally Posted by Phelix
Sorry, but this "advice" just assumes a lot and doesn't try seriously at all. And not just about the quality but moreover for some reason about the material which has not the slightest thing to do with this, since what I wrote implied the same material. It affects the whole range of material, it is just a different sound signature.
Most importantly it doesn't answer my simple question but I've noticed this is hard to come by here anyway.
It's got excellent mids. they are very present and, as usual for me, force the singers, in modern masterings, against my face.
Perhaps you are deaf and require phones that have an n shaped frequency curve.
In anycase, unless your O2/ODAC is faulty, the O2 is neither weak nor strong on the mids, just flat. It's up to you to compensate for your needs with DSP or phones.
It does seem to me that you have fundamentally misunderstood what the ODAC/O2 are all about.
It's completely barmy to be talking in the terms you do about kit whose raison d'etre is to not have a sound signature.