XP Deus 2 Update 4.0: Multiprocessing & New Features Explained

The new XP Deus 2 Update 4.0 has been available since January 23, 2026, and brings one of the most exciting innovations in recent years. The Deus 2 Firmware Update 4.0 focuses entirely on the new XP Stereo Headphones and a new technology that XP itself calls "Multiprocessing." This XP Deus 2 new update elevates signal processing to an entirely new level.

You can download and install the new update here: XP Deus 2 Updater

Click here for the new stereo headphones:

• WSA ST
• WSA XL ST
• WS6 ST

XP itself held a livestream about the update, which you can watch here: XP Livestream on Update 4.0

What does the XP Deus 2 Update 4.0 bring?

The XP Deus 2 Update 4.0 unlocks very significant new features – but only in combination with the new XP Stereo Headphones. Users who continue to use classic mono headphones will, however, receive a new audio mode with the next update 4.1, which will be released shortly: Low Square.

This new mode ensures that the tones sound somewhat deeper overall. Especially with highly conductive materials, the high tones, often perceived as shrill, are reduced. This makes the sound reproduction more pleasant, depending on preference. This point alone makes the XP Deus 2 new update interesting for many users.

Multiprocessing: The new parallel signal processing in the XP Deus 2

However, the real highlight of the XP Deus 2 Firmware Update 4.0 is the new Multiprocessing system. This new function is best translated as "parallel signal processing" or "dual-signal processing."

Before Update 4.0, it was like this:
You selected a search mode and set parameters such as sensitivity, reactivity, iron volume, and other options. These settings applied to the entire search process. The Deus II can still be used this way!

Now, with the use of XP Deus 2 Multiprocessing, there is a revolutionary additional possibility.

Two channels, two settings, active simultaneously

With the new stereo headphones, the Deus 2 now operates with two channels:

• Channel 1: Your familiar settings
• Channel 2: A completely second, independent set of settings

Both channels are used simultaneously. This means you are essentially searching with two detectors in one device. Signals from Channel 1 and Channel 2 are processed in parallel and output via XP Deus 2 Stereo Audio technology.

You can choose whether:

• Channel 1 is on one ear and Channel 2 on the other ear
• or both channels are played back on both ears simultaneously

You can see what the menu on the Deus 2 control unit looks like and which settings can be changed on the second channel in this image:

As you can see, the settings for the second channel can be adjusted on the right, and the currently selected normal settings are displayed on the left, which can also be adjusted clearly and quickly in this menu.

Why is Multiprocessing so exciting?

This new technology opens up a whole new world of possibilities. Especially for those who enjoy fine-tuning and experimenting with their search programs, XP Deus 2 Multiprocessing provides an extremely versatile tool.

XP has already integrated some presets for the second channel, so even beginners can immediately benefit from the advantages. You don't necessarily have to be a tech professional to unlock the potential of these new XP Deus 2 new features.

A simple use case: Depth estimation solely via sound

A very clear example:

On Channel 2, a lower sensitivity is set than on Channel 1. This means Channel 2 has a shallower search depth.

The result:
If a signal is only audible on Channel 1, it can be assumed that the object is relatively deep in the ground. If it appears on both channels, it is likely closer to the surface.

This function alone shows how helpful XP Deus 2 Dual Signal Processing can be for target identification. Such information was previously difficult to determine solely through sound.

What will be possible in the future?

At this point, it is still difficult to estimate which setups will prove particularly effective in practice. However, in the coming weeks, some exciting Channel 2 configurations are sure to emerge, enabling significantly better assessment of finds based solely on audio reproduction. The possibilities are very diverse and therefore still difficult to gauge.

We will, of course, conduct our own tests and share our experiences with you as soon as clear advantages and proven settings emerge.

Important: Multiprocessing only works with stereo headphones

To be perfectly clear:
This new, potentially groundbreaking technology is exclusively usable with the new XP Stereo Headphones.

You can find all information about the headphones here:

• WSA ST
• WSA XL ST
• WS6 ST

Without these headphones, the Multiprocessing function is not available.

Conclusion: A huge step for the XP Deus 2

With the XP Deus 2 Update 4.0 from Friday, January 23, 2026, XP has introduced one of the most exciting innovations in recent years. The new parallel signal processing, the XP Deus 2 Multiprocessing, the ability to search with two channels simultaneously, and the new stereo audio system make this update a real game-changer.

Anyone who wants to unlock the full potential of the Deus 2 cannot do without the new stereo headphones and the XP Deus 2 Firmware Update 4.0.