Jesusa0,
What USB dac did you use for your comparison? The only Yamamoto dac you list is a YDA 1. As far as I can tell this is not a USB dac. Also it is from 2008 or so. There is a new dac from Yamamoto, a YTA 2 dac. This is a USB dac. It is a brand new model according to their web site. You state and I quote, "2.- USB to SPDIF converter. To my ears better resolution than connecting USB straight to DAC". So I ask what USB dac have you used to determine this opinion?
What USB dac did you use for your comparison? The only Yamamoto dac you list is a YDA 1. As far as I can tell this is not a USB dac. Also it is from 2008 or so. There is a new dac from Yamamoto, a YTA 2 dac. This is a USB dac. It is a brand new model according to their web site. You state and I quote, "2.- USB to SPDIF converter. To my ears better resolution than connecting USB straight to DAC". So I ask what USB dac have you used to determine this opinion?