mate, there is a thread over on AVS that sheds a few icicles of understanding regarding this bit 'o kit
https://www.avsforum.com/forum/39-networking-media-servers-content-streaming/3046068-teac-nt-505-usb...
general consensus of those that actually have the DAC is that it is excellent. Built to a high standard, the DSD upsampling is actually something useful and you can use it as a ROON endpoint. I am an AK chip guy but have been considering the go NAD C658 for the Dirac vapor ware... wontcha buy an NT-505 and if you don't like it sell it to me...
https://www.avsforum.com/forum/39-networking-media-servers-content-streaming/3046068-teac-nt-505-usb...
general consensus of those that actually have the DAC is that it is excellent. Built to a high standard, the DSD upsampling is actually something useful and you can use it as a ROON endpoint. I am an AK chip guy but have been considering the go NAD C658 for the Dirac vapor ware... wontcha buy an NT-505 and if you don't like it sell it to me...