I have a Hifiman HE-400i and want to get some better music out of it. I am currently using an Asus Xonar DGX(30$) and want a better dac/amp. The Schiit Stack will almost certainly have better sound quality, but the GSX has nice features and especially the 7.1 surround, which I hear is amazing. Both are around the 200$ range. Thanks for the help.