Amplifier heat depending on power cable?

Hello,

I have an ML No 27 and I've noticed that when using one of my power cables it heats up MUCH more than when using another cable I have.

Both cables are manufactured by small European companies, probably little known in the US (Hifi Cable & Cie from France, Actinote from Belgium)

Does this make sense?

BTW, the sound is better with the less heating up cable.

Thanks.