Fellow Deus users, my name is David and I am an avid Deus user.  I have several hours on the detector model and have run versions 2.0, 3.0, 3.1. 3.2, 4.0 and the latest version 4.1.

What can version 4.1 do for you?

First of all version 4.1 is NOT a bells and whistle update.  Granted the update seems did improve performance associated with use of the MI-6 pinpointer, V4.1 does offer additional performance in the field.  The following data compiled from use of using the 9" LF and 11" LF coils.

I have been testing, comparing and detecting using both versions 4.0 and 4.1 on 2 different Deus setups.

Folks reading the new Deus 4.1 manual will notice ground tracking has been changed, the way it works based on a user's soil mineralization and also depends on this new setting that Version 4.1 brings called ground sensitivity.

Well, granted using version 4.1 and using tracking ground balance, Deus on average will run quieter.  But folks, quieter is not always better.  What I am trying to say here, yes Deus will when tracking ground balance is selected and medium and lower ground sensitivity settings are used, Deus programming stands a good chance to make Deus go to default ground balance ground phase setting of 88.  By the Deus doing this the detector will not be as deep at finding, or calling nonferrous actually with nonferrous tone, or deeper nonferrous targets could become choppy, misleading a user to thinking indeed there is iron under their coil.

So, in order to get peak performance for depth, manual ground balance using V4.1 has to be used or higher ground sensitivity settings be used to force Deus with the new V4.1 programming to track to the ground.

But using higher ground sensitivity settings come with a price.

What exactly?

Deus for whatever reason is a better separator, unmasker with  usually mid level ground sensitivity level settings of between 5-7.  Users of version 4.1 will notice default ground sensitivity is indeed level 6, and for good reason.

I should point out based on actual testing and live undisturbed buried nonferrous targets in the wild, it seems V4.0 is identical with identical settings of version 4.1 as long as V4.1 programmed unit has ground sensitivity level set to level 10.

Comparing signals on nonferrous during testing placed in challenging situations as well as nonferrous targets in the wild, comparing V4.0 and V4.1 ( with ground sensitivity) set to level 6, I witnessed many times where targets swept with V4.1 to have either or/ and fuller tone, cleaner tone, less chopped, less irony sounding on the edges, just tone period, less static.

When actually even taking the V4.1 unit and sweeping these same targets with ground sensitivity to level 10, I again noted what I say above about what happened to the signals on nonferous targets.

A side note here, and I after discovering this tendency was able to make some nonferrous finds.

Deus tendency using V4.1 and using mid level settings 5-7 ground sensitivity levels, if Deus coil is actually over ferrous and trying to signal (provide high tone wisp) say on nail or iron, if a user changes ground sensitivity setting to level 10 and the signal is the same or gets stronger, this what Deus is signaling on is likely iron.  But if going to level 10 on the ground sensitivity setting and the signal drops out or is more compromised likely nonferrous.

A skilled Deus user using V4.1 can in fact IMO hunt behind a skilled Deus user using V4.0.

I encourage all folks to try V4.1, and with time if a person will compare targets with varied ground sensitivity settings, it won't be long until all what I have said here becomes apparent.  Granted hunting in areas already hunted hard using previous Deus versions likely will bring this to light for folks faster.

This ground sensitivity setting is seems related to ground mineralization, but it is my opinion based on testing, even folks with milder ground yet polluted sites can benefit from V4.1.

The advantage of V4.1 Deus will not be apparent with all nonferous targets discovered(comparing signal data using ground sensitivity levels 6 and 10),  but given time in the field it will be.