ramses wrote:

You can compare serial numbers.

Yes if one noted the old serial number, OP did not.

Serial number is on purchase document.... OP may have a look.

Did you ever used room eq in Totalmix ?

finally
it was driving me crazy.
thanks for the support.

the last comment is not true
the UFX (from 2013) doesn´t sound the same ---as UFX II/UFXIII  the new chips sound 10-15% better.

Please do the recordings and let RME analyze for results.

Just got the UFX III from my friend and i´m going to record something with it and the same file with the UFX III

explaining depth and detail is missing
some frequencies from 1500hz up to 20000hz are  mixing or not at the coeerect level.
it´s so  obvious when you compare them.
How can they not notice it.

You can compare serial numbers.

Yes if one noted the old serial number, OP did not.

just installed totalmix did nothing to it a part of raising the master volume, so reseting what?

The complete state of TotalMix FX is written to a file which starts with "last.*" the "last settings file".
It could be that TotalMix FX settings are in a wrong state.
So resetting TotalMix FX means to bring back TotalMix FX default settings to exclude any potential bogus settings.
Maybe an overlooked phase setting problem and whatnot.

You can compare serial numbers.

The part that seams not be perceived is the fact that i´m comparing the unit sent to me with a UFXIII same cables same drivers same computer,  everything the same.
Makes no sense talking about cables or anything else.
just installed totalmix did nothing to it a part of raising the master volume, so reseting what?

I didn´t look for the serial number. I forgot. How can I find out if its the same unit?
even if it is why is it not fixed?

In Totalmix menu Options / Reset mix / Total Reset

New installation of Totalmix does not replace old settings

Thomann and others do not deeply analyze the returned units.
They make a quick function check and decide to forward the unit to repair ot just return to customer.

Customer often receive no information about the process and can not find out if the return is new or refurbished or the same device.

I didn´t look for the serial number. I forgot. How can I find out if its the same unit?
even if it is why is it not fixed?

Sounds more like a Troll or bot…?

Send both files to RME support.  support@rme-audio.com

"sounds like mud" is not a technical value, if there is a sound degradation it can be measured.

Did you note the serial number from your first unit to find out the received second unit is not the same ?
Do you have a document declaration for the exchange of the device for a new one ?

Above a Total Reset in Totalmix was suggested by Ramses, did you follow-up this ?
If not yet, please do so and let us know.

At your sound tests with other interfaces did you use the same cables ?
Possibly your XLR cables have bad wiring and decrease the volume by a fraction ?

Sent the UFX II back to Thomann and received today a new one.
Pluged it in to find out that sounds exactly the same as the previous one

Something in happenning at the factory 2 units with the exact same problem sounds like quality control problem.

maybe a lot of people that buy it have no idea how it should sound like.I have a RME ufx and a close friend has RME ufxIII
and the units  I´m receiving sound nothing like the UFX clarity