@canibefrank
I actually own the NT-505 and the MP-D2 though the first version with the AKM 4490 chipset. As a DAC only the sound is similar though the sound of the MP-D2 can be "tuned" quite a bit with the various input and rectifier tube combinations. So if DAC only is what you need then the MP-D2 is a good place to start. If you need or want the streamer and don't have another DAC then the NT-505 does a lot of things right.
I actually own the NT-505 and the MP-D2 though the first version with the AKM 4490 chipset. As a DAC only the sound is similar though the sound of the MP-D2 can be "tuned" quite a bit with the various input and rectifier tube combinations. So if DAC only is what you need then the MP-D2 is a good place to start. If you need or want the streamer and don't have another DAC then the NT-505 does a lot of things right.