Using DOP (as I do not have an ASIO driver for my mac, which I as understand it at present is only available for and with an ExaSound DAC). I can play DSD128 files natively to the DAC (albeit via DOP), and I can set JRiver DSP output to convert my PCM files to DSD128 for the DAC (again over DOP).
The Loki can only accept DSD64, no higher bitrates…