Iridium noise-clicking issue

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1 Jahr 3 Monate her #1 von Ellende
We have recently bought the Iridium and whenever we change the settings there is a loud clicking sound, sometimes when playing these loud clicks can be heard as well. I returned the synth back to the shop but they say don't hear anything and think something is wrong in our set-up.

All our synths (we have about 20, mostly desktop or rackmount synths such OB6, Korg Triton, Yamaha FS1R, Kawai, Casio VZ-10M etc... ) they are all connected through patch bays and patched to a Steinberg UR22 into Logic Pro. In the enclosed video you can hear the noise when changing programmes. Any ideas why the Iridium makes this noise?
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