Sky HD audio cf. Amazon Fire Stick

[firstborn]

I've long thought the audio from the Sky Box was quite 'quiet' and nothing like the quality you get from a disc. However I've just bought a Fire Stick and the difference is immense!

I have a Denon AVR-X5200W into Q acoustics 3020s and 3010s and a Dahli sub. Both sources send audio over HDMI.

Anybody else think the Sky audio is somewhat lacking? If not what am I doing wrong.

 

[firstborn]

Seems a common/normal thing then. Only really an issue when I crank up the amp for the Sky box and forget when switching to another source