Very interesting thread! Happy Roon and microRendu user here and I'd like to correct some things. Occamsrazor is right.
Roon can output to almost any device which should include the DVS since it's known to the system as a virtual soundcard e.g. using the ASIO protocol. See also this page https://kb.roonlabs.com/Architecture for all supported output devices. The DVS would qualify as a 'local device so you could use Roon installed with 'Core' only for headless machines and remote control with something like an iPad for example or the full Roon installation which includes a local running GUI (it installs Roon's core, control and output functions).
RAAT is Roons proprietary streaming protocol and not related in any way to DLNA/uPnP/OH, lot's of detailed information about it here: https://kb.roonlabs.com/RAAT
The Sonore microRendu is a 'Roon Ready' device which means it is an endpoint certified by Roon Labs and uses a hard- and software tailored version of RAAT. More info on Roon Ready here: https://kb.roonlabs.com/Roon_partner_programs
There's also a slimmed down output only Roon install for Windows/Mac/Linux called Roon Bridge. It acts as an endpoint and receives a music stream over ethernet. More info on it here: https://kb.roonlabs.com/RoonBridge
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The microRendu is more than just a uPnP renderer, it can function in all modes below:
(source http://www.microrendu.sonore.us/)
Mode #1 - SqueezeLite Output - This output works with any Logitech Media Server and compatible controllers. This output supports true gapless playback of PCM and DSD/DoP.
Mode #2 - ShairPort Output - This is an AirPlay emulator that utilizes streams sent to it from a compatible source. This output supports true gapless playback of PCM.
Mode #3 - MPD/DLNA Output:
Mode #3a - DLNA Output - This output utilizes streams from UPNP/DLNA servers and controllers. This output can be configured as an OpenHome renderer. This output supports true gapless playback of PCM, DSD/DoP, and native DSD.
Mode #3b - MPD Output - This output is intended to work with a SMB mount. This output supports true gapless playback of PCM, DSD/DoP, and native DSD.
Mode #4 - HQ Player NAA Output - This output utilizes streams from Signalyst's HQ Player running on your computer. Digital signal processing is performed by HQ Player and then asynchronously streamed to the Network Audio Adapter (NAA) output. This output supports true gapless playback of PCM, DSD/DoP, and native DSD.
Mode #5 - RoonReady Output - This output utilizes streams from Roon. This output supports true gapless playback of PCM, DSD/DoP, and native DSD.
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Just as an FYI introduction (first post here), my current system is: PS Audio P3 Power Plant, Lessloss DFPC/DFPC Signature power cables, Paul Hynes SR7EHD-MR4, Sonore microRendu, Curious USB cable, Mutec MC-3+ USB, DH Labs D-110 AES/EBU, Devialet 250, Nordost Tyr Reference LS cables, Von Schweikert VR-5 SE Anniversary Edition, Anti-Mode Dual Core 2.0, JL Audio Fathom F112
There's also a pair of gigabit TP Link fiber ethernet converters with Cisco GBICs between the current PC based 'NAS' running Roon and the microRendu. The FMC close to the microRendu is LPSU powered.
In the past I have used or tried the Regen, Jitterbug and Intona USB Isolator (Industrial version) and some different ethernet (like AQ Diamond) and USB cables (including Audioquest, TotalDAC D1, Kingrex, Supra). My PC consisted of (the microRendu has replaced it):
JCAT USB interface + JCAT battery PSU
Paul Pang/PPA Studio Red SATA cable
Windows Server 2012 R2 standard with Audiophile Optimizer, JPlay, Fidelizer Pro
PSU: HDPlex 100W Linear PSU + HDPlex HiFi 250W DC ATX PSU
Network: gigabit optical fiber converters for full galvanic isolation
Case: Streacom FC5 WS EVO
Mainboard: Gigabyte GA-Z97MX-Gaming 5
CPU: Intel Core i3-4350T 35W dual core 3.1gHz hd4600
RAM: G.Skill RipjawsX 8GB (2x4GB kit F3-12800CL7D-8GBXM), CL7
Storage: Samsung 840 EVO 500GB SSD
Internal star earthing and earthed shielding of certain components like the JCAT, twisted DC cables in part shielded
AC powered by PS Audio P3 Power Plant