[seeteeyou]

PGGB Offline Remastering
https://www.head-fi.org/threads/pggb-offline-remastering.958100/

Now that PGGB version 2.0.42 would allow specific headphone EQ filters to be imported, a transportable headphone rig with a mini PC running Windows + MinorityClean etc. should be quite interesting

https://www.remastero.com/guide.html#HeadphoneFilt
https://audiophilestyle.com/forums/...d-magic/page/33/?tab=comments#comment-1147970

Option to import PGGB-optimized Headphone EQ filters from remastero website
(for select headphones, list expected to grow)

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Offline upsampled files are relatively large and therefore the compression ratio of WavPack should be the way to go. Since it's a headless system, MPD wouldn't be a choice at all

https://www.musicpd.org/download.html
https://www.wavpack.com

MPD - Media Player Daemon for Linux and Windows (native WavPack support including DSD)

OptimFROG is yet another candidate but MPD wasn't interested in any of that

https://github.com/cspiegel/mpd
https://wiki.hydrogenaud.io/index.php?title=OptimFROG
https://www.mail-archive.com/mpd-devel@musicpd.org/msg00488.html

Your code constitutes a copyright violation, because the OptimFROG code is non-free and thus not compatible with the GPL.

MAFA for remote control

https://mafa.indi.software

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Basically there are quite a few form factors available with 8GB of RAM and a reasonably powerful (appropriate for its size @ 10W TDP) Celeron J4125 processor.

First one is a palm-sized PC @ 62 × 62 × 42mm (2.44 × 2.44 × 1.65 inches) with active cooling

https://www.amazon.com/NucBox-Windows-Computer-128GB-512GB-Bluetooth/dp/B08KZMPK2P
https://www.cnx-software.com/2021/06/16/gmk-nucbox-review-a-palm-sized-windows-10-mini-pc/

Second one is a PC stick @ ‎5.5 × 2.3 × 0.7 inches with passive cooling

https://www.amazon.com/MeLE-J4125-128G-PCG02-GLE/dp/B08LYRQZ59
https://liliputing.com/2020/11/mele-pcg02-pc-stick-now-available-with-8gb-ram-and-celeron-j4125.html

Last one is a similar to the dimensions of 2.5" SATA HDD enclosures @ 131 × 81 × 18.3 mm (5.2 × 3.0 × 0.7 inches) with passive cooling

https://www.amazon.com/MeLE-Quieter2-Computer-Dual-Screen-Ethernet/dp/B08ZXXJL6N
https://www.cnx-software.com/2021/06/01/mele-quieter2-review-windows-10-ubuntu-20-04-egpu/
https://dbeley.ovh/en/post/2021/05/25/mele-quieter2-mini-pc-review/

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So far MeLE Quieter2 seemed to be the most appealing to me because of its M.2 2280 slot for NVMe drives, therefore I could add my own Intel Optane SSD with the best SQ for the money

https://ark.intel.com/content/www/u...es/132776/intel-optane-memory-m10-series.html

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Since Intel didn't provide support for the USB-C PD (Power Delivery) standard for any NUC models so far, I don't think that any affordable mini PCs would have that any time soon.

Here comes the tricky part

https://www.cnx-software.com/wp-content/uploads/2021/06/Mele-Quieter2-review.jpg

The Mini PC does not contain a Power Delivery Controller, can't support the Type C power adapter with PD protocol. And then maximum voltage limit of MeLE Quieter2 is 26V. Please use the 12V/2A power adapter we supplied.

https://www.amazon.com/MeLE-Quieter2-Computer-Dual-Screen-Ethernet/dp/B08ZXXJL6N

4. Can it be powered by a power bank?

No, it’s better not to do that. The mini PC needs a stable 12V/2A power supply, it must connect with the original power supply.

Can this be powered with a usb battery pack?

We do not recommend this, because a high power may burn out the device. Please use the 12V/2A DC charger delivered by us.

I'm assuming that they do know what they're talking about, while they're also quite confident that Quieter2 could get away with 24W (i.e. 12V × 2A) or less.

Some audiophile brands such as Synergistic Research happened to add graphene to quite a few product lines, a power bank like this could get the job done

https://prestigio.com/graphene-power-banks/graphene-pd-pro
https://www.amazon.co.uk/Prestigio-Graphene-Multiple-Wireless-Compatible/dp/B08G56BHLR

USB Type C: 5V-3A / 9V- 3A / 15V-3A / 20V-2.25A

That means I'll simply need to try 27W (i.e. 9V × 3A) as well as 45W (i.e. 15V × 3A) with some PD trigger cables and see how far I could get, maybe I'll also add some TPS7A4701 and LT3045 regulators (15V → 13.5V → 12V) for even better SQ just in case 15V might not work

https://www.ldovr.com/product-p/dxp-3a0dscombo.htm

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I hope that I'm not missing anything, and a Plan B could very well be something like piCorePlayer + Compute Module 4 with passive cooling and the right carrier board

https://www.aliexpress.com/item/1005002935486960.html