Moving from the Esoteric P-05/ D-05 to the K-03

the KO3x has a new DAC ak4495s (same as Grandioso)
4 dac 34 bit internal processing KO3 32 bit
dsd usb dac function support up to 5.6mhz dsd file play back
external clock sync in usb dac operation (1)
New custom clock device same as Grandiso
dsd (dop) to be supported on spdif imput
vs-dd to be add on ko3x
Much better all around than the Ko3

Fellow member ; Syntax noted ; ''The X-Version is an upgrade Board to enable DSD Streams. That's it. No better output stage, no higher data processor, nada, only DSD Streams.''

I just found out today as other members have noted ..that there were some significant internal changes made in the '' X '' version.

Do you know what internal changes they made? When I asked Esoteric about the X-Version I got the info I wrote above. That was also on their website announcing the X-Version.

I believe there is a difference between X models purchased new and upgrades of existing units to X status. The upgrades don't get the new DAC, etc.

......some have said that the K-03x with the newer Dac's is almost and not by much- just as good sonically as the discontinued K-01