Distortion with LCD-X and RME ADI-2 DAC

Hello, I hope someone here can help me. I have an Audeze LCD-X that I use with an RME ADI-2 DAC with the headphone jack, I use Roon Core and Endpoint with Intel NUC, the problem is that I hear distortion at a very low volume, it happens with the Audeze filter activated in Roon and also without the filter, I used the headroom and applied -6db to control it but it still feels the background distortion, do you have any suggestions? I use the same system with some HifiMan HE400i and it sounds great, without any distortion, I have tried the Audeze LCD-X with the headphone output of a Yamaha A-S1100 stereo amplifier and they also sound good, the headset has no problems, it is new and I concerned that it was damaged, the problem only occurs when I use it with the RME ADI-2 DAC. Thanks for your help.