satsuma

Looks great, thanks. Can you please confirm, both 6.1.0 & 8.1.0 require CPU w/ avx512?

Running HQPlayer Embedded OS stand-alone server, streaming from a separate roon-core device, very occasionally and randomly playback stops and this appears in the HQPlayer log: clControlThread::ParseMsg(): I/O error: DataSource: Failure opening file /etc/ssl/certs/ca-certificates.crt Anyone have any ideas what might be the cause?

Great to hear that Piero had a solution, enjoy!

Embedded 5.5.3, PCM/SDM output switching on the fly is working great - THANK YOU!

- Yes, 12v dedicated to the CM4, and a separate 5v for the JCAT, works. I ran mine that way before I obtained the Optimo Nano. - I had not yet tried DSD1024, appreciate the question. My server is not capable of sampling up that high with the heavy filters/modulators, I am just happily listening to 256. So today I did test 1024 (using the lighter oversampling settings) and the NAA is handling it just fine. Attaching below a shot of the typical conditions during this 1 test. Can't yet vouch for long-term stability, but it should be fine. - Yes, I have AL configured with ramroot and also iso cores, but I haven’t A/B tested the SQ on these settings though… Hope you go for it.

Does HQplayer OS include a package manager or process to update hqplayerd (like apt-get or wget)? Or does this require us to re-image?

I would like to share an NAA device I built, and would appreciate any feedback or suggestions for improvement. I learned a lot building this, but probably still missed something important. The idea was nothing new: put a JCAT USB XE card on a low-power single-board-computer, give it a good power supply, enjoy. Certainly CAPS Twenty.One was inspiring and helpful. I had a Raspberry Pi CM4-IO board laying around. When I saw that Holo Red was running on a CM4, I thought this collage of parts might actually be a worthwhile experiment. Processor - Raspberry Pi Compute Module 4 (CM4), 8GB Lite (no eMMC storage) Carrier Board - Raspberry Pi Compute Module 4 IO Board w/ 1 PCIe Gen2 x1 socket & microSD card (for OS) USB Output - JCAT USB XE PCIe card 90-degree PCIe adaptor - OnLogic PCI x1 2.0 Low-Profile Riser - Faces Over Motherboard - https://www.onlogic.com/pciex1-lpr/ Power supply filter for USB card - JCAT OPTIMO nano, pulls 5v & ground from CM4-IO 4-pin connector Chassis - generic Mini ITX case Assembly accessories 3D-Printed mounting adapter - modeled myself, to mount CM4-IO to standard mITX mounting holes in chassis 3D-Printed I/O Backplate - modeled myself, a little finishing touch on the backside that no one ever sees, but includes 2 structural support points to secure the PCIe card OS - Audiolinux Pi4-Pi5 64bit version 4.0.1, Kernal Linux 6.1.64-rt16-2-rpi-ARCH Obviously one could also try NAA OS, especially if you want a set-it-and-forget-it appliance. I chose Audiolinux for the extra convenience of ssh, ease to configure a static IP, and ease to update NAA-software and Linux in the future. Hardware Configuration - RPi settings to disable wifi+bluetooth+USB, set overclocking, and support the JCAT card: /boot/config.txt #audiolinux initialization initramfs initramfs-linux.img followkernel #overclocking arm_freq=2000 over_voltage=6 #wifi & bluetooth OFF dtoverlay=disable-wifi dtoverlay=disable-bt #USB2-HUB to remain OFF for audio playback - leave this commented-out #dtoverlay=dwc2,dr_mode=host #force PCIe config to support 32bit DMA addresses - required to drive the JCAT PCIe card dtoverlay=pcie-32bit-dma Power Supply Paul Hynes SR-3 12v (external) 5v option rabbit hole: you can modify the CM4-IO Board to accept a 5v supply. This will bypass the 12v-to-5v Buck Converter (AP64501) on the IO board, which might result in a theoretical SQ benefit. From the RPi docs: “…to supply an external +5V supply to the board, e.g. via J20 or via PoE J9, then we recommend that L5 be removed. Removing L5 will prevent the on-board +5V and +3.3V supplies from starting up and +5V coming out of the DC jack socket (J19).” I experimented with this, by removing the L5 choke and supplying 5v to J20. It worked but resulted in a very-quiet-but-audible buzz from the board. I admit all might have still been ok, but I bought a new IO board and went with 12v into the DC jack. The device has been very stable in my system, handling up to [email protected](20 bit) or nativeDSD512x streams, NAA input: ethernet direct from HQPlayer Embedded server via IPv6 NAA output: USB to Holo Spring-3 KTE NOS DAC As someone with no rational reason to avoid all the extremely capable commercial products, and with a curious itch to build something myself, this project was satisfying and perhaps worth sharing here. Thanks and enjoy. - satsuma

So happy for this - THANK YOU!

Plan to use it to display hardware monitoring data, such as CPU/GPU usage/temps/clock/voltage. I see now that VUdials has created an application that will collect that data and interface with the server to send it to the dials. Looks like only the windows version is ready at this time: https://github.com/SasaKaranovic/VU-Demo-App Demo app documentation: https://docs.vudials.com/app_demo/ Assume they will share a linux version.

Hi Jussi, looking at this new USB hardware: https://vudials.com For those of us running HQPlayer_OS, Do you foresee any issues if we install & run the python3 server, as described: https://github.com/SasaKaranovic/VU-Server Thanks.

Appreciate the update - thanks for testing.

Marcin, Would you recommend powering BOTH the USB_XE and the new Master_OCXO with a single Optimo nano? Thanks.