Apple TV/Airplay DAC advice

[Imac71]

Hi folks. I've just bought an apple tv (3rd gen) box, and find it very useful to stream itunes to my receiver. Would a device such as Audioquest Dragonfly help improve the sound, and if so (daft question time....), does that plug into the amp, the computer or the Apple device. Thanks for your patience, Ian.

 

[Paul.]

What recever do you have?

 

[Imac71]

Its an Onkyo TX-NR6009.