Hello Ronny,
Maybe this is off topic but I am looking for a similar app for my Emotiva AV Receiver. The according request is stored here Homey Pro Community App Requests - #601 by romiwi.
As the Emotiva AV Receiver is also completely controllable via an ethernet connection and also a complete reference of the Emotiva API (see Dropbox - XMC-1_remote_codes_and_net_API - Simplify your life) is available, i was wondering if you would be willing and able to implement an according app. I would be available for testing it and also make a donation 
, would really appreciate your work ! Thanks a lot !
