🔶 Sennheiser HD650

Hello all.

Has anyone had a problem with weird inner-ear / eardrum pain / discomfort from listening to these?
This is strangely more intense for me when using an Ifi Zen Can compared to an atom DAC.
Am I going crazy? Is this a normal thing? Could this be listener fatigue? Maybe a side effect of sensitive points on the skull and jaw from the strong clamp?
New to the whole audiophile thing.
Would be handy if anyone has insights on this.
Cheers.