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Tag Archive for Windows Server 2025

Fidelizer Nimitra Firmware 7.0 Updater is released featuring Erawan and CoreStream support and major sound quality improvements

 in News

 

Nimitra Firmware 7.0 Updater

 

Nimitra Firmware 7.0 was scheduled to be launched with Nimitra3 / Nikola3 in August 2026 but there’s a lot of new optimizations to work on such as PerfectDynamics optimizations on Audirvana and Roon and Fidelizer 9 too.

Now that everything is finalized for completion, Nimitra firmware 7.0 is now ready. This upgrade is quite special due to Fidelizer 9’s engine with new core optimizations so both of new engine and firmware update will come together.

 

Fidelizer 9’s core optimization engine

 

With reworked optimizations of Fidelizer 9 release, Fidelizer streamers that will receive Fidelizer 9.0 core optimization engine together with firmware 7.0 update. This new engine will bring new life to Fidelizer streamers that could be considered as major upgrade.

This core optimization will greatly improve musicality and make Fidelizer streamers sounding more organic and lifelike in a way that can only be achieved through real analogue recording. But now streaming can feel that similar experience thanks to this new engine.

 

Tidal / Qobuz / Spotify Connect with exclusive playback support

 

Spotify Connect

 

As some people requested about Connect feature for Fidelizer streamers to work with native application directly, I developed solutions for Tidal / Qobuz / Spotify to work with connect feature also. At first they aren’t mentioned because most people stopped using it later.

But since there are a lot of customers who prefer to keep native user experience with Connect feature, I’d like to make this clear that Fidelizer streamers can implement Connect feature with exclusive playback support including Spotify also.

If you want to implement connect feature, please contact me and we can schedule remote session to implement this function on your streamer. Sound quality on Connect feature will perform great with Fidelizer 9’s core optimizations in dedicated environment.

 

Expanding support Erawan and CoreStream streamer

 

Since Nimitra streamer project has been scaling into Erawan and CoreStream, I planned about releasing Erawan 2.0 firmware after Nimitra 7.0 firmware later. But change on CoreStreamOS made me realized a single firmware for all streamers is better approach.

So, Nimitra firmware 7.0 will support Erawan flagship streamer and CoreStream streamer also. New changes and improvements will apply on all Fidelizer streamers in a way that is suitable for target streamer.

 

PerfectDynamics optimizations for Audirvana and Roon

 

Ever since Fidelizer has partnered with Audirvana, I’ve been working closely with Audirvana to provide the best experience to clients who use Fidelizer streamers with Audirvana software and assisted Audirvana on different occasions.

After Audirvana migrated platform to .NET 10 runtime, I have been working on making the most of .NET 10 runtime optimizations for and develop proprietary optimization technology for Fidelizer streamers with Audirvana.

After the completion of this new technology, Audirvana has become Fidelizer’s new reference platform that can provide PerfectDynamics using Kernel Streaming Extreme without harshness or fatigue and capture real sound performance perfectly.

Roon also migrated to .NET 10 runtime too so I expanded PerfectDynamics tuning to latest version of Roon platform too. Although current Roon doesn’t meet Fidelizer standards anymore, this update helped some clients moving from Roon 1.8 to current Roon now.

 

Improved uPNP streaming sound experience

 

Nimitra Firmware 7.0 Updater - Main

 

As Audirvana and Roon getting big improvement with PerfectDynamics sound optimizations based on new proprietary software tuning technology exclusively for Fidelizer streamers, uPNP streaming is also improved a lot too with deeper level tuning.

Pure playback optimization now disables more components reducing footprints further bringing quieter noise floor and core engine is further optimized to reduce interference in software to reduce non-audio workload.

Streaming latency is also enhanced with smooth transition for better playback experience. Stop / Pause playback will not stop music abruptly. Changing track can be adjusted between 0.5 / 1 / 2 / 4 second(s). Low latency options won’t have smooth track change.

 

Improved internal system and application optimizations

 

There’s a lot of internal system and application optimizations in firmware 7.0 to further improve audio performance in this release. Airplay now will have perfect a/v sync with Apple products like AppleTV and some application files are updated to more recent version.

Internal system optimizations are improved with improved reliability bring further stability across different playback platforms. With firmware 7.0, CoreStream / Nimitra / Erawan all can perform with the same reference real sound experience as best in its own class.

 

Changelog

-Added fade-out transition to perform with latency optimizations after “Low Latency” configuration
-Added PerfectDynamics runtime optimizations for Audirvana / Roon platform
-Added CoreStream and Erawan into supported devices
-Changed default audio profile to “Network Renderer”
-Changed process optimizations to maintain priority/affinity consistently
-Improved internal sound quality optimizations for based on Erawan to other product models
-Improved pure playback optimizations to disable more components
-Improved playback control experience with uPNP
-Improved streaming performance and reliability with uPNP
-Improved uPNP to stop after long pause so driver won’t keep locking on USB audio device
-Optimized Airplay a/v sync to have the exact sync accuracy
-Optimized output configuration to focus on 2.0 channel playback
-Optimized system optimizations to support different memory capacity across all product models
-Optimized uPNP platform to reduce background footprints
-Updated OpenHome libraries to latest stable version

 

This firmware update is based on current CoreStreamOS / NimitraOS / NimitraOS running on Windows 11 24H2 and can be installed on older models of Nimitra units to enhance current features installed.

If you’re using older Nimitra models, you may consider upgrading your current Nimitra model with Nimitra3 Streamer Upgrade Plan to get the best music experience, especially with Audirvana and Roon.

Erawan / Nimitra / CoreStream customers can request for firmware update and I’ll update Nimitra firmware through remote support. Feel free to contact through email or support channel to schedule remote session.

Fidelizer Nimitra Firmware 6.0 Updater is released with overhaul optimizations based on Erawan flagship streamer

 in News

 

Nimitra Firmware 6.0 Updater

 

After releasing firmware 5.0 in 2022, we’ve been improving Nimitra internally and apply newer changes and improvements over the years until it reaches maturity stage to make it official. Today is the day we can announce official firmware 6.0 update.

Version 6.0 will cover major improvements based on Erawan flagship streamer that can be applied into Nimitra product. Firmware 5.0 was biggest improvement but 6.0 is now bigger with overhaul optimizations and improvements as below.

 

Windows Server 2025 Sound Quality Optimizations

 

After being impressed with sound quality from Windows Server 2022 for the first time enough to put onto Nimitra firmware 5.0, Windows Server 2025 made further improvements and changes are tailored for Nimitra to bring streaming closer to real sound.

Erawan was launched in the same month as Windows Server 2025 being released officially so we have been working closely with 24H2 codebase since the first beta. We’ve been optimizing Erawan until last week before making local launch in November 2025.

It’s quite fortunate for Nimitra that changes from Windows Server 2025 can blend smoothly with NimitraOS optimizations making Nimitra Classic and Nimitra2 sounding a lot closer to Erawan at much more affordable price point.

 

Universal Core Isolation Policy and Playback Optimizations

 

Nimitra Firmware 6.0 Updater - Main

 

When firmware 5.0 was released, it was mainly for Roon optimizations at first and we put JRiver improvements during last minute before official launch. After Roon failing to meet our expectations, we started working on universal optimizations.

We work closely with developers who are our partners like Audirvana to bring the most satisfying experience to our clients with optimizations on Nimitra. The change of direction to universal approach will optimize all audio applications.

 

Core Isolation Policy:

Single core (Recommended for low latency audio playback)
Dual cores (Recommended for high buffering audio playback)
No isolation (Disabled)

Playback Optimizations:

Standard optimizations (Default recommendation)
Enhanced optimizations (Improve playback performance)
Max optimizations (Full real-time process optimizations)
Safe optimizations (Improve Roon’s reliability)
Extra-safe optimizations (Fail-safe optimizations)
No optimizations (Disabled)

 

Default configuration will use dual core isolation and standard optimizations now to maintain good synergy and reliability with most devices. Customers can also request for optimal configuration for their system to get the best sound quality possible.

 

Improved reliability with Roon/JRiver Optimizations

 

FidelizerRemote

 

After releasing firmware 5.0, we noticed a few unusual issues with Roon and JRiver software used in Nimitra and added workaround to resolve the following cases as below.

  1. Roon keeps eating up space after applying a few updates so all temporary files will be cleaned up before loading Roon on startup
  2. JRiver has occasional issues with USB audio not being responsive due to having pause on audio playback so it will stop after a long pause

Firmware 6.0 will address these issues and keep Nimitra stable with unusual cases but we do care enough to bring the best music experience.

 

Improved internal system and application optimizations

 

There’s a lot of internal system and application optimizations in firmware 6.0 to further improve audio performance in this release. Even Airplay now will bring outstanding audio performance and some application files are updated to more recent version.

More unused features in audio platform and operating system are disabled to further reduce interference in system and bring inner fidelity of streaming to the next level along with improved internal system optimizations.

 

Improved quality of life improvements based on ErawanOS

 

After releasing Erawan, there’re a few changes being requested by clients and store vendors to bring to Nimitra too. For example, changing track with JPLAY in Erawan will have smooth fade out before playing a new track. This is implemented in firmware 6.0 too.

Some other unique optimizations from Erawan are also implemented on Nimitra such as disabling core parking and USB’s power saving features so Nimitra will improved sound quality and user experience being more similar to Erawan for what Nimitra can achieve.

 

Changelog

-Added Audirvana/Spotify/Tidal/Qobuz applications support into NimitraOS optimization platform
-Added I/O priority optimization on Audirvana/CoreAudio engine/Roon/Windows Audio
-Added JRiver’s memory playback mode decoding file into memory before playback
-Added temporary files cleaning process to maintain product’s reliability over time
-Added Windows Server 2025 sound quality optimization into NimitraOS
-Changed JRiver’s latency optimizations to Core latency optimizations supporting FidelizerRemote / uPNP / OpenHome / LMS
-Disabled Cloud content delivery that may download over time and cause “Get even more out of Windows” screen
-Disabled CPU core parking and USB’s power saving features
-Disabled un-used features in core streaming platform to improve performance (can re-enable requested feature via remote support)
-Extended core isolation and playback optimizations to all supported features including Audirvana and HQPlayer NAA endpoint not just Roon
-Improved .NET runtime optimizations for better performance and reliability
-Improved compatibility with JPLAY iOS app
-Improved disabling Windows Update in more cases (Windows Update can affect sonic performance and remove optimizations)
-Improved internal sound quality optimizations for NimitraOS 2.0 platform
-Improved optimizations on WDM audio performance (DirectSound, Airplay, audio in browser, etc.)
-Improved reliability of automate library files scanning
-Improved reliability of Roon updates
-Improved reliability of uPNP / OpenHome / LMS features
-Improved reliability with JPLAY iOS app in some cases
-Improved Roon Isolation Policy optimizations for better sound quality and stability
-Improved Roon performance by cleaning temp/cache before running RoonServer
-Improved startup optimizations for better sound quality and reliability
-Optimized Airplay streaming quality to improve audio performance
-Optimized core streaming platform’s audio output buffering to improve compatibility with JPLAY streaming app
-Optimized default configuration to improve performance and reliability with legacy USB DACs and USB storage playback
-Optimized remote support reliability to reduce its effect to audio processes without affecting performance
-Updated AirPlay platform binaries to stable version
-Updated core streaming platform to be recognized in streaming app as Nimitra endpoint
-Updated HQPlayer NAA binaries to version 5.1.5
-Updated OpenHome libraries to latest stable version

 

If you’re using Nimitra Classic, I’d like to inform that Nimitra Classic will be discontinued in future after successful launch of CoreStream streamer. So, you can upgrade your Nimitra Classic to Nimitra2 at $1,500 USD only.

Nimitra runs on specially tuned NimitraOS platform with special version of Fidelizer. All these optimizations are specially tuned for Nimitra’s hardware and software configuration, separated from Fidelizer software optimizations.

Nimitra Classic / Nimitra / NimitraS / Nimitra2 customers can send request for firmware update and I’ll update Nimitra firmware through remote or request download link for applying update manually.