H40 with the DUNU DUW-02. Theses DUNU cables are the ones that come with the DK-2001.
The cable material is a neotech single crystal copper coated silver in litz structure. For folks that need to switch their terminations on the fly. DUNU cables are absolutely superb and is of the highest quality when it comes to cables. Structure and material of these cables are similar to ISNs S4 cables that come with the D10.
Out of all the cables I have used these are not only an upgrade to the stock S8 cable with improved imagery and stage but these retain the warm tonality of the original tuning. Balance is meticulous out of this cable and I am hearing more copper influence on the tuning more than the silver aspect like the ISN S4. Meaning bass and especially mids have better imaging with better spaciousness vs the stock cable. It is yet another upgraded take on the H40.
I had to do some yard work so I plugged this cable on it and used it for a good 2 hours. I also have the DUNU hulk cable that came with my LUNA I can try as well but thus far the H40 has shown me time and time again that cable changes makes the H40 sing like never before. Will update this to the front page with the other cables.