Question regarding the pronunciation of e ん

[RaccoonButler]

So, Mawarine Shuu pronounces e ん with a sort of stop in between the e and the n, so it almost sounds like
e-t-n, and I have been wondering for some time whether this is a pronunciation error or a stylized pronunciation.

I've never heard another bank do that, but also no one brings it up so I'm not sure.

 

[Cine]

I think that's just how Shoohey recorded the bank.
The stop might be him trying to keep the ん clear on it's own without having too much え bleeding in to it.