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manisandher wrote:

The latest firmware 'fixes' this issue. The AFI1 can now work in dual-wire mode at half or full audiorate clock frequencies.

Very good. I am impressed with Daniel’s responsiveness.  I wonder how many people would be affected and benefited with the new firmware. The 2-3 individuals around the word? Not a lot of manufactures would do it so fast and for free. Truly impressive!

manisandher wrote:

What totally amazes me is the huge difference in sound between using the AFI1 with the PMII in MASTER vs. REF_CLK modes (at 176.4KHz and 192KHz SRs). The sound is transformed from a hard-etched one to a totally fluid one. I can only assume that this is down to the use of a poor* clock and/or power supply in the AFI1.

I do admit that in Master Mode Pacific better but I would not describe the situation when Pacific and Lynx run individual clocks as “hard-etched”. The difference is minor and I would say that I would not recognize it blindly with 100% certainty. Probably you are right and the reason is in a very poor quality of AFI1’s own clock or in bad implementation of the ways how AFI1 use own clock to slave the DAW’s resources.

manisandher wrote:

At these SRs, I've been using the Reference Recordings 176.4 material primarily. However, the difference is still pronounced when using 16/44.1 material and the 'Arc Predicition quad upsampling' feature in the XXHighEnd player. The latter is especially interesting with the PMII, as it has been designed to work with NOS DACs... and I believe that the PMII works in NOS mode at 4fs (I'd love to know this for sure though).

I have no idea if Pacific does any oversampling. I however never do any upsampling or any rate change during recording or playback.  The worst that I had was the use of so fashionable nowadays Memory Players that can ease do rate chance.  I hated the result very much, in face I hate how all Memory Players sound.  I think the way how it shall be is a file shall be played in the rate and resolution it was recorded. Period. 

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