I love my SGC Sonictransporter with the Sonore microrendu. I plan to upgrade to the UltraRendu soon, maybe with the optical module.

2023 Editors’ Choice: Best Music Servers Under $10,000

Absolute Sound Jul 21st, 2023
https://www.theabsolutesound.com/articles/2023-editors-choice-best-music-servers-under-10000/

Sonore UltraRendu Renderer

$999 (Sonore Linear Power Supply, $745 w/cable)

This unusual device takes files sent by an external server, which you must also provide, and plays, or renders, them, which means it converts digital music files in the usual variety of formats to a bitstream a DAC can handle; and that DAC, of course, must have a USB 2.0 input. It is compatible with PCM files up to 768kHz sampling rate and DSD512. The microRendu produced a significant improvement in transparency, detail resolution, spatiality, timbral realism, and overall sound quality. Note that you need to buy a separate power supply, like Sonore’s own at $695. VF, 280

They list the Sonore optical module too.

I think that the SGC Sonictransporter should have been on the list, because it is a server, whereas the Sonore is a streamer. SGC is a Sonore partner/dealer.