Never really had the desire to MOD the HD800. I never had a problem with piercing treble, I would even say that they are probably the smoothest headphones treble wise I own. One of the main things I have noticed with the HD800s is how transparent and revealing they are in terms of your audio chain, I know this has been repeated countless times over, but every small modification or change in my audio path can be heard almost instantly with the HD800's, while other headphones the difference is not as apparent. I guess this can be a good and bad thing. I would have a really hard time recommending these headphones to most people, they are just too picky. Perhaps I have an excessively warm and colored set-up that mitigates the treble spike but whatever it is, the sound is always smooth, warm and spacious. I think the biggest downfall of the HD800 (and this has been somewhat lessened by the HD800S) is how they have the ability to sound marvelous and majestic on one system and sharp and sterile on another. If I look at my chain, it revolves completely around the HD800, when buying new components I always had the mentality and goal that I wanted to preserve the transparency and soundstage while injecting some warmth and pleasant euphonics into them. I think I am at a point where majority of the "flaws" or undesired traits of these headphones have been remedied with my audio chain (even if it is not optimal in terms logical sound engineering principles, EX- adding tube buffer into chain) the end result is always the same, reaching a perfect equilibrium. Ultimately the HD800s are not user friendly and demand a system to be built around them but once the pieces start to fit together, it is worth the time, money and patience.
![DT1990-ChSd-1024x555[1].png](https://cdn.head-fi.org/a/12230656.png)
) You can send them an email about this to find out the details. It should work from what I know.
