"He speaks English easily and clearly."

Translation: Labhraíonn sé Béarla go héasca agus go soiléir.

[MaryLea11]

Is her pronunciation of 'go héasca' to be trusted?

[SatharnPHL]

There is usually a diphthong in éasca - you can hear both the é and the a before the s, but in ordinary speech that nuance is often missing.

[freymuth]

The recording here puts a little more emphasis on the "a", but it seems like a reasonable pronunciation compared to éasca