So, HP A8 is the better choice for Th900?
I hesitate to answer your question because I have not heard the Th900. I will say though that I would buy the Mojo and then buy a budget amp later as I feel that the later down the line the Mojo will still be a great Dac whereas a dac/amp like the HP A8 will not hold its value as well. I have spent more $ on other gear that the Mojo easily has replaced. These are just my thoughts.....