Questions, questions , questions....

[PeterSt]

Mani/Peter, given that the computing power now exists today to do the oversampling in hardware integrated with the DAC why would one expect to achieve better sound quality by doing it outboard of the DAC and using a NOS DAC? 

Flexibility and asynchronous power. So, the second version of Arc Prediction is on its way, and if you would have had the DAC and it would have been internal, no way upgrades would exist for that, or it would be relatively (very) difficult (which is what I planned originally but it takes additional hardware and complexities).
The power emerges from the fact it can be done just semi real time (as it is done now, in the preprocessing stage).

February is the plan, but last week I learned that the transformers I need will be produced in February ...
But at least something improved again (which I didn't tell about yet).

[Telstar]

This is what I find so exciting. The best sound and measured performance is with oversampling... BUT done right. And this is exactly what QAP gives (and OAP will give) us.

One of the biggest issues with 'old' DACs like mine is that they just didn't have the computing power back then to do oversampling/filtering as well as we can now. But if this is now done in the software, and the inferior oversampling/filtering in the DAC can be defeated, then such DACs are given a new lease of life.

In a way, this is a bit like the original McLaren F1 road car. Put it on a track against a 'modern' supercar, and it will struggle (see Martin Brundle's video from a few years ago). However, replace its brakes with modern ceramic ones... and I know which car I'd take.

Mani.

Thank you for repeating what i was trying to explain on computer asylum from about one year ago
The problem was that until now it lacked a software able to do that seamlessly and in realtime.

[Telstar]

In short, Peter is creating what I believe is the world's first NOS 24/352.8K DAC.

Mani.

I think it is the second DXD filterless DAC, the DAD can work filterless only at DXD sampling rate (which now i dont remember if it is 352.8 or 384k).
It is for sure the first filterless DAC at 24/176,4k

[manisandher]

I know nothing about the AX24, other than it uses multibit delta-sigma chips (as does dCS). I didn't realise that you could use these without oversampling/filtering...

Mani.

[PeterSt]

I know nothing about the AX24, other than it uses multibit delta-sigma chips (as does dCS). I didn't realise that you could use these without oversampling/filtering...

Mani.

Which - if it is delta-sigma - I won't believe much ...