On Advanced -tab.
At least it is something I have tested and know how it works…
Not a real classe D : Benchmark + A26.
Actually : DSD256 classic poly-sinc-gauss duo + ASDM7EC light 512+fs
For NAA Os, it’s here?
Choose naa-461-X64.7z or naa-461-X64ramfs.7z
For installation on an Intel NUC without any OS, how do you install it?
Take this one…
Extract the .img file from the 7-Zip archive and write it on a USB memory stick on microSD card using disk image writing utility. Then just boot up from it. No installation necessary. When it ends up in login prompt, it is ready for use.
It’s a NUC without keyboard or screen.
I connect by ssh with Dietpi.
Question: Naa os remains on the USB key, can we install it on the NUC SSD?
How do you turn off the NUC when Naa Os is active (without keyboard or screen)?
I booted from a naa os USB key, but in HQP Desktop the RME DAC no longer appears.
I rebooted several times, but still the same.
Yeah, not necessary as long as it knows how to boot from USB storage.
Yes you can also write the OS image to the internal SSD, but there’s no benefit in doing so.
Short press of the computer power button boots it up / shuts it down.
If you use the ramfs image you can also safely pull the plug. Although you can be pretty safely also pull the plug on the regular one (it is not writing anything relevant on the storage).
Does it have more than one Ethernet port? I have not seen any NUC with more than one, but in case yours has, then please use the HQPlayer OS image instead. Which NUC model is it?
INTEL NUC Kit NUC12WSKi30002 i3-12220P
One port Ethernet.
when I restart with Dietpi/Naa, the DAC is clearly visible (no change in the wiring)
OK, I guess for some reason it doesn’t get IP from your DHCP server (usually in your home router) and that’s why it doesn’t appear on HQPlayer.
What configuration does it need? I’m guessing that they have reserved the IP address for the DietPi OS and it is issuing the same out for the NAA image.
NAA OS doesn’t require any configuration. It is just expecting to get IP using DHCP on the home network. If DHCP server is set to issue fixed IP for the device, that is fine too.
What I don’t quite understand in my case with Naa Os is that HQP Desktop sees Naa, but does not see the DAC.
For me the DAC does not have an IP address (connect only USB), or there is something that I did not understand!
I will also try again with the Naa os ramfs version.
I assume Naa Os is mounted in RAM.
I have 16 GB on the NUC, that should be enough
Ladies,
I have borrowed my friends Cyan2 which he received last week from Wildism Audio Hong Kong.
Cyan 2 is indeed the classic we were hoping for. My measurements below.
And yes I am finally listening to it after measuring - beautiful.
Under 100kHz DSD256 beats DSD512 in all measurements. I won’t show DSD512 here, no point.
With Jussi’s classic 5MHz wideband Picoscope, DSD512 is nice but for my headphones listening I would choose DSD256.
Cyan2 is not really significantly better than the SMSL D-6 - but this is true discrete for the price of an RME ADI-2.
All measurements below using 44.1kHz test signals → DSD256 + poly-sinc-gauss-xla + 5EC-light
120dB RMS ‘range’ (nice):
Higher level dual tones create HF distortion but low enough in level:
Pretty much like the spec:
IMD vs level. Ignore the small ups and downs. ‘Line of best fit’ is good enough:
TDFD dual tone brings out more HF distortion but still low enough:
Triple tone:
Jitter perfection:
Jussi classic Pico 
- it is good enough
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And how does it sound compared to the SMSL D-6?
I no longer have the SMSL but my measurements show the D-6 is still stellar performance.
If you properly matched levels for a comparison, would be hard to pick if blind folded.
Some addition comments:
There is something similar to the DSC1 sound - speed of attack / transients.
PCM measurements are average with Cyan2 - DSD256 is the way to go.
All my measurements were with Cyan2 directly USB connected to my 11900K HQPlayer Embedded server 
- the built-in USB galvanic isolation helps those measurements nicely. Don’t need to buy any isolator / USB fixers.
Hook it up to whatever and feed it DSD256 and enjoy the tunes
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And beyond the measurements, once again, it remains to be seen whether the sound is “better”. This remains subjective… better than my A26 (AKM) ? worse than a Spring 3 ? USB… ok but I2S.
I have been discussing various Holo bits of kits with Magna Hifi and in terms of shipping from Netherlands to the UK. They have been very responsive and have answered my questions. Going up the Holo range, the Spring 3 seems to be around 3 - 3.5 x the prices of the Cyan 2 depending on options chosen. Those are the two I am considering.
A few questions buzzing around my mind…Is the Cyan 2 a worthwhile upgrade to my Topping D90 DAC (which is also fed DSD256)? Is the Cyan 2 better than a RME Adi-2 DAC fs which I am also considering? Should I wait and save for a Spring 3? Can I use a Cyan 2 with a Topping pre90? Ultimately I like the idea of a seperate pre-amp.
Thanks for the measurements!
@dabassgoesboomboom @jussi_laako are there posted DSD256 measurements of the A26 anywhere to compare to the Cyan?
Wondering if $1000 gets you the same DSD performance but with a NAA.
What do mean by HQPlayer seeing the NAA, but not seeing the DAC? Either DAC is not connected, powered up or correct input selected.
At least Cyan 2 is clean output. It doesn’t have the D-6’s built-in SMPS ultrasonic interference noise…