Originally Posted by DigVid
Wow, that is interesting. I would really like more information on this. What sources could you share with us that would shed some light on this "fact". From reading the manuals of the three models, I couldn't find anything that suggest that the A3000 handles DSD in "Pure Direct" any differently then the A1000 or A2000. Also, I (for one anyway) am amazed at the sonic difference between 176.4/24 PCM and DSD on my A1000 (maybe I got lucky again). So what is the point of the DSD decoding at 1-bit on these AVRs?
I was using the DAC info mentioned in the previous post. Everything points to the A1000/2000/3000 having the same DACs as the V1067/2067/3067.
Personally I think Pure Direct mode is overrated, because you're bypassing all processing and for most people that outweighs any advantage Pure Direct might have. But if you have a great sounding room and speakers that don't need correction, it can make sense.
With Yamaha Pure Direct can always be selected, it's just that it's not always really direct to the DACs, depending on the audio format and the model you have. The manuals tend to ignore that, but at least the blue light comes on!
On my 1800 DSD sounds as good as PCM sent by the player. Some people will say PCM over HDMI is more subject to jitter than DSD, but I don't hear a difference. If you hear a big difference in favour of PCM then it would be nice to know the reason.
And BTW, if you send PCM at 176kHz I wouldn't be surprised if the first thing that happens in the receiver is it's downsampled (except probably in Pure Direct mode). Certainly the 1800 was shown to do this as soon as any kind of processing was required, and it has basically the same two DSPs and fewer channels to deal with.