I could not easily find an answer so I sent Schiit a email this is what was said. I sent it in regrades to my HDJ-2000s:
"We use the Vali all the time with 32 ohm Grados ,and it is significantly better in that application than Magni. However we have no direct experience with any Pioneer headphones. I'm afraid." So I'm going to get it as soon as possible. My sound card went out so I order a Creative ZXR. Going to hook the Vali to the RCA outputs and use it for a DAC. I hope this helps someone else and I also hope that everyone has had good holidays.