NarrativeHi! I have the X7s too. I've been searching for such question for days if not weeks. In short it is enough but it would be even better if you have the DT880 600ohm balanced so you can connect it through the balanced port, which is more powerful than using the unbalanced. But using the unbalanced is okay too but don't forget to set the gain on high on the bottom controls of X7s. I recommend you to check a video "The Beyerdynamic DT 880 (600 Ohms) Does Not Need The Power You Were Told" where the X7s is also reviewed.