I asked Shanling support via email about DST decoding capability on M6, the answer is NO for the moment, but planned for the future, when I asked Fiio suuport, I found there there are types of SACD ISO´s, the DST is one that requires more power (decoding I suppose), this was very unfortunate since I have many ISO, which are ISO SACD rips in DST. I was hopping this M6 would be capable and maybe is tied to the 64 bit implementation, or maybe current 32bit plus Neutron would play these DST´s not sure...... I can share a SACD ISO file trough google drive, let me know..
DST is not supported by our Shanling Music app. But you can use other music players to open and play DST.