With all the prototyping work, since it is now "released" on massdrop is there any big reason as to why the drop will ship in 6 months time at the earliest rather than sooner?
Besides that, there will not be any costs cut between the prototype (looking at all the raving positive reviews of the review units), right? The 'Hibiki' author made the following comment on the massdrop Discussion page:
[about components on the current PCB design on the massdrop page...] 6656 using here is not suitable for ladder because it produce 50uvrms noise, while my design(6654) can go deep to 1uvpp that make the sound purer, darker. This should be a costdown point for Airist. 6654/6656 share the same footprint. It is simply a costdown(probably from 3 USD to 2USD), but 350 times noisier.
For the record I don't want to come across as too sceptical or anything, I have my pre-order for the R2R placed, it's rather out of concern of receiving the same quality unit as is spoken of in the preview/reviews on the massdrop description page and here on head-fi. It would not be the first time a prototype unit is of higher quality than the final mass production units.
Also, I doubt the THD spec.
How about to post FFT result, let customer see if it is that low level.
Once using that noisy power source, it is really difficult to achieve -118dB SNR. For my design, it can go deep to -140db@1k further(fully tested). Just one bulk more.