AirPlay Crackle

[Muscadel]

I have two Gold Phantoms and an AirPlay compatible Dialog.

I started noticing some crackling at high frequencies when playing some tracks using AirPlay, so decided to investigate further with some test tones: The problem was then very obvious! If you have a Phantom and/or Dialog with AirPlay compatibility, could you try playing this track from iTunes/Apple Music using AirPlay? Flat Low Distortion Sweep from 2 - 20 KHz

I get distortion from both Phantoms if I use AirPlay to the Dialog, but also on one Phantom if I AirPlay directly to it. 

Playing the same test tracks using Tidal in Spark, or to other makes of AirPlay speaker, does not produce any distortion, so it would seem that the issue is only with AirPlay on the Phantom and Dialog.

Devialet Support seem to be going round in circles and I can't get them to tell me whether they can reproduce the problem or not.

The distortion/crackle has been mentioned in the Spark vs AirPlay poll, with a couple of others reporting similar issues to me, but I thought it was worthy of its own thread, especially if all AirPlay Phantoms/Dialogs are affected!

100% the same problem.  Purchased a Gold, set up Spark and Deezer, and spark produces no signal crackle, any other device produces crackle.  ran frequency sweeps to confirm
Huge problem!