I appreciate your detailed reply and useful suggestion!! Helped me a lot! I'd better save money for a better desktop dac&amp. 

Thank you! It is said that the sound quality of Mojo is the same as Hugo's and Hugo is assumed to be at the same level as Benchmark DAC I. So I expected the Mojo have the better sound quality than HDP. Well, it seems I was expecting too much of it. Thanks a lot! 

Wonderful review. Very helpful. I also have a NuForce icon HDP now. Do you think Mojo is assumed to be so much superior to HDP that I need to buy it for upgrading? Thanks!