Don’t read this if you don’t care about what this thing does or how it sounds. I haven’t measured anything and very competent dScope folks are already on it.
- It plays CDs, and it plays them well. That’s sort of the minimum you’d expect.
- The other thing it does is receive 2 USB inputs and either do USB output or SPDIF.
- The USB implementation is custom - they call it Unison - and they claim to have focused on getting PCM performance right. There are plenty of CMedia DACs and gizmos out there that measure and sound good, too.
- If you compare, say, its SPDIF output and its USB output into a DAC that supports both inputs and A/B,
you do hear differences in soundstage and attack. This could be explained by the receiving DAC having separate clock strategies for each input. I could not run a similar test with a PiAES because the USB output and the hat’s SPDIF output have very different volumes and that makes listening hard. However, I will say having the unison output go into a DAC with unison input does sound different - whether it’s
distortion one subjectively enjoys more or not is a different point. Changes are simple to hear: the attacks are precise but are slightly bloomier (gated reverb drums, harp plucks, or acoustic guitar is where you’ll notice it the most). With various amplifiers I consistently experienced differences in the soundstage width, which surprised me (Considering in the end I was not switching DACs). I think it would be fun to have a DAC that ”measures” the same with SPDIF and USB input and try it there. I don’t think the SPDIF output in this thing is crippled, sounds as fine to me as the PiAES SPDIF out. Those are objective things someone can measure and rule out.
- It is also a new toy. Comparing streaming input to CD is fun. And yes, some of us have decades-worth of CDs, and current mixes are different from what we got in the 80s/90s. And if you have “no idea” of what the fuzz is about with loudness and mix changes and unavailability of certain recordings, well, then you are probably not interested in a CD player anyway.
- I compared the CA CXC to this thing, both outputting SPDIF into the same DAC, I can’t hear a difference.
Value/Performance is a subjective thing. Go cheaper (CXC or a computer drive that reads at 40x and also does DVDs) or burn 4K or more on an MCT80. Whatever you enjoy your music (and/or your APx555) the most with is the right choice