Dan Clark Audio Aeon Closed

Did that, it's definitely the headphones, just can't figure out where. I did some more digging and found some forums and posts where people describe this exact issue. Some say they need a basically perfect seal to have good bass and if the adhesive under the pad gets a bit loose or dry the base can reduce. Sounds legit, just need to experiment.

I had some other headphones before and I have not experienced it to this degree, but I definitely felt it to some degree. I have no prior experience with planars, so I thought they might be more susceptible to this.

After playing a lot with the orientation and seal of the pads I have concluded that this must be the issue.

I have finally acquired my first pair planar headphones (DCA Aeon Closed). I seem like the sound profile quite a lot, but I have noticed an imbalance between the two sides.

I have noticed an imbalance between the two sides. I got a bit worried that it was the driver, but when I lift both drivers a bit further away from my ears, some centimeters, the imbalance is gone and they sound exactly the same.