Good listeners - to mod a little better

I bought some time ago the HD558 because of me HD598 optical not suit you.
Processing I like good, although the handset is mainly plastic. He feels good and especially the pads are really succeeded.
Despite glasses no press - simply comfortable. This was quite different from my earlier headphones HD 418.
Robust acting detachable cable that transmits hardly borne noise in the handset. A somewhat overgrown jack adapter is also still in the process with. Have him but not yet needed because I exclusively listen to the stereo system.

But now to the sound:

Fine resolution in the treble range, not too narrow, not too soft, that fits.
The midrange could be a little stronger, here the handset does not come ran on my hi-fi systems. It lacks a little articulation and also the drums could use more punch.
In the bass quite plump, sometimes with little precision and basslasatigen pieces sometimes boomy. But all complain at a high level, never annoying.
Legal small stage with good directionality.

Then stumbled by chance on the net on a "mod". Here are 2 foam pads which are glued to the ear cups away. Since the drivers are identical to the 598, this shall detail land at 598 the tone.

After the "operation" it is the joy:

The easy überhöte Bass is now gentle, dry and precise audible. The midrange is not crisp, but slightly warmer. In the treble, nothing changes, just like the picture.

An absolutely worthwhile work (about 3 minutes).

All in all, I would buy the handset, especially after he is tuning his money more than worth it.