Glad to have found this thread! I've been dealing with the "pops" since day one. The issue does appear to be coming from the H9K.
jbamberg- will you please send me version release 1.2.254.?
I've given you access to this release in our software administration backend – you should see it in the Software Update page of your H9000 or in emote. If you need a USB-installable version let me know.