Thank you for the answers.   As I read here http://www.whatsbestforum.com/showthread.php?18580-Science-Thread-Review-of-Audioquest-Jitterbug-and-Uptone-Regen-USB-Conditioners   I'm not really convinced to use any USB thing (PPA or Regen) to make the SQ higher, but still reading...

Hi all,   First of all, I'm very happy to find this forum, lots of very useful infos about hifi. Respect to the writers. I have a question about USB transports. Here's my system:   Yulong D18 DAC (without USB in) => Amp => Speakers   My plan is to feed this with my PC.   As I see in...