Nubert nuControl X Firmware Update – Spotify Lossless, New Menu Navigation and Fixed-level Input

The most useful part of the forthcoming Nubert nuControl X firmware is a single option with broad consequences for system planning. From 5 August 2026, volume control can be disabled specifically for the analogue RCA3 input. That allows an AV receiver to control the front-channel level during film playback while the Nubert preamplifier and the connected stereo system continue to handle those channels. Nubert electronic GmbH is combining this integration feature with lossless Spotify streaming and several changes to day-to-day operation – all for the existing nuControl X, not only for the newer Nubert nuControl X-2.

Key Facts Nubert nuControl X Firmware Update

• Product: Firmware update for the Nubert nuControl X
• Release date: 5 August 2026
• Distribution: Automatic installation via the Nubert software server
• Requirements: Internet connection and Automatic Updates enabled
• Home cinema integration: Volume control can be disabled for analogue input RCA3
• Streaming: Spotify Lossless at up to 24 Bit and 44.1 kHz
• Operation: Revised menu structure and optional German-language interface
• Protection: Configurable device lock using a personal PIN
• Price: Free of charge

RCA3 Removes a Familiar Integration Compromise

Combining a dedicated stereo system with an AV receiver often leaves two components involved in volume control. That demands careful level matching whenever the stereo amplifier or preamplifier is used for the front channels of a multichannel setup. For RCA3, the new nuControl X firmware removes that second control point.

Once volume control has been disabled for RCA3, the signal arriving at that input is handled at a fixed level. The front-channel pre-outs of an AV receiver can therefore feed the Nubert nuControl X, while volume during home cinema playback is adjusted on the receiver. There is no second volume setting on the Nubert unit to check or match.

The arrangement does not alter the role of the nuControl X for music. In a dedicated stereo session, it remains the central preamplifier and sound manager. The new option concerns the chosen RCA3 input and establishes a separate, clearly defined route for multichannel operation.

Spotify Lossless Without an Additional Client

The streaming addition will be the more immediately apparent change for many users. According to Nubert electronic GmbH, the update enables Spotify Lossless at up to 24 Bit and 44.1 kHz. Spotify playback through the nuControl X can therefore take place without lossy data reduction.

No external streaming client or replacement hardware is required. The service becomes part of the existing unit’s streaming capabilities once the new firmware has been installed.

Fewer Steps Through the Menus

Nubert has also reorganised the menu structure. Functions are intended to be easier to locate, with fewer steps required to reach and change individual settings. This matters on the nuControl X because its scope extends well beyond basic source selection and volume control.

An entirely German-language interface can now be selected as well. The change does not affect what the unit can do, but it makes its extensive configuration options more accessible to users who prefer German menu terminology.

A PIN Keeps the Configuration Intact

A new device lock protects the Nubert nuControl X with a personal PIN. It can be used to prevent accidental or unauthorised changes to volume, signal processing and the wider system configuration.

The option is relevant wherever several people have access to the system, whether in a shared living area or another freely accessible installation. Once the nuControl X has been configured, its settings can remain protected without protected without restricting its intended role in the system.

Current Software for the Existing nuControl X

None of these changes modifies the hardware or output performance of the Nubert nuControl X. Their significance lies in extending how the existing preamplifier can be operated and incorporated into a system.

Nubert could have limited the latest software development to the new Nubert nuControl X-2. Instead, substantial parts are also being made available to owners of the preceding model. Existing hardware consequently gains further integration, streaming and operating options without being replaced.

What Owners Need to Check

The update will be distributed from Wednesday, 5 August 2026, through the protected Nubert software server. The Nubert nuControl X must be switched on and connected to the internet, and the Automatic Updates function must be active in its menu.

If that function has previously been disabled, the unit will not retrieve the firmware by itself. Owners who want the update to install automatically should therefore check the setting before the release date.

The Most Important Advantages at a Glance

• Defined home cinema operation: RCA3 can operate without volume control so that an AV receiver determines the playback level.
• Stereo functions remain available: The Nubert nuControl X continues to act as the central preamplifier and sound manager for music playback.
• Spotify without lossy data reduction: Spotify Lossless supports playback at up to 24 Bit 44.1 kHz.
• No additional streaming hardware: The new Spotify function is added directly to the existing unit.
• More direct operation: The revised menu structure reduces the number of steps needed to reach settings.
• Optional German menus: The interface can be displayed entirely in German.
• Protected configuration: A personal PIN helps prevent unwanted changes to the device settings.
• Automatic installation: With Automatic Updates enabled, the firmware is retrieved directly from Nubert’s software server.

Price & Availability

Nubert electronic GmbH will provide the firmware update for the Nubert nuControl X free of charge from 5 August 2026. Automatic installation requires the unit to be switched on, connected to the internet and configured with Automatic Updates enabled.

Conclusion

The fixed-level RCA3 input gives this update its strongest practical argument. It removes an awkward second volume stage from systems in which a dedicated stereo chain also reproduces the front channels of a home cinema setup. Spotify Lossless, clearer menus, the German-language interface and PIN protection then improve areas owners encounter more regularly. Extending the existing Nubert nuControl X alongside the new nuControl X-2 is therefore worthwhile product maintenance: the hardware stays where it is, while its range of useful applications grows.