[Rozenberg]

  The mod is easy to remove, isn't it ?

In my case, not. The resonators' bottom actually sit pretty tight, I think I almost tore the top of one of the resonator so I didn't continue.

 

[SteveM324]

  In my case, not. The resonators' bottom actually sit pretty tight, I think I almost tore the top of one of the resonator so I didn't continue.

I agree, though I haven't tried to remove them.  I think they can easily be removed but some damage to the resonator may occur during the removal process.  I really like the change the mod brings to the table so I'm not interested in removing them.

 

[Sorrodje]

I installed and removed several pairs. just be careful and patient and the resonator will come without damage but yes it can be tricky. That's why  I adviced to order two pairs in the same letter in case of  

 

[ext1]

I had to also remove and reinstall the mod several times for comparison purposes and I agree that it's relatively simple to do but needs caution. 

 

[bosiemoncrieff]

My chamber/lieder shootout for HD800/K1000 is forthcoming, though I continue to be surprised at just how decidedly blah I am about how HD800 renders piano. It sounds like there's a blanket on the instrument, a dullness pervades it that doesn't affect vocals or other instrumentals, which are great (if different from K1000).

 

[Sorrodje]

2-4khz dip  

 

[bosiemoncrieff]

so i need to EQ it down for 6khz but eq it up for 2-4?

 

[Sorrodje]

Yep

 

[Liu Junyuan]

Zana Deux Super > RCA 5691 Red Base Vacuum Tube > HD800 : sound is : extremely detailed, layered, soundstage depth, bass quite present & not muffled, mids upfront, treble/ highs clear w/ no roll off, voices are great & on some recordings I hear the lyrics more clearly than ever before = best I've ever heard the HD800.

I agree. That tube and amp is fantastic for HD800. Layering, staging, resolution of microdetail, and dynamics are incredible.

 

[frank2908]

One does not appreciate the technicality of those driver until they taken them fully apart
check out my build 
http://www.head-fi.org/t/752877/3d-printed-closed-headphones-with-hd800-driver/120#post_12930842
When modding, I noticed that the silver metal sheets on the back of the driver really vibrates a lot when sounds coming out. When I tried to add blutack to the back of them, all the detail gone missing. Maybe this is the secret to their amazing detail retrieval and imaging capability, along with the ring diaphragm. 
I made the resonnator out of 3d printed brass PLA, which add a bit more weight to the screen protector. The screen hole is also cut off. The result is the less peak and still a bit "zing" (but no way harsh, just a hint) at high frequencies, so the detail is still there compared to felt resonator.
 

HD800 driver taken apart

HD800 internal

HD800 driver with 3d printed Brass-PLA resonator & stax sr007 modded earpads

3D printed headphones with HD800 driver
 

Another view

 

[beowulf]

  One does not appreciate the technicality of those driver until they taken them fully apart
check out my build 
http://www.head-fi.org/t/752877/3d-printed-closed-headphones-with-hd800-driver/120#post_12930842

 

 
Very interesting work Frank, they're looking pretty good.

 

[JaZZ]

Brave modding work!

 

[twiceboss]

Which is better in terms of soundstage, HD800 or K812?

About the treble too, which one is more forgiving?

 

[Youth]

Which is better in terms of soundstage, HD800 or K812?

About the treble too, which one is more forgiving?

HD800 has bigger soundstage. Neither of them has forgiving treble.

 

[TheRealMVT]

Just placed my order on a pair! I am curious how my modi2u vali2 stack will sound with these.