After some time exploring and experimenting, I’m thrilled to share my success in integrating my Denon AVR-X2600-H receiver with Heos, SmartThings, and the Harmony Hub. This journey was a bit challenging, but the outcome has been well worth the effort. 
Initially, I was unsure how to connect the Denon receiver with SmartThings. I stumbled upon some forum discussions that hinted at using third-party integrations or custom automations, but nothing was straightforward. Persistence paid off when I discovered that SmartThings could interact with the receiver through its network capabilities. I set up a simple HTTP request to trigger power on/off commands, and voilà! The receiver now responds seamlessly to my SmartThings routines. 
The Harmony Hub posed another interesting challenge. While it didn’t recognize my specific receiver model, I found that selecting a similar model (like the X2500) in the setup worked perfectly. I configured the necessary controls through the Harmony app, and now I can manage the receiver’s basic functions with just one button press. It’s incredibly satisfying to have everything integrated so smoothly. 
Heos has been a game-changer for me. By linking my Heos app with SmartThings, I’ve been able to create some fantastic automation scenarios. For instance, when I press a specific action tile, it not only turns on the receiver but also switches to my favorite radio station or a pre-selected Spotify playlist. The addition of Heos speakers throughout my home has elevated my audio experience, and the ability to control everything via voice commands or the SmartThings app is simply amazing. 
This integration has opened up a world of possibilities. I’m now planning to expand my setup further, possibly adding more Heos speakers and exploring voice notifications for a fully immersive smart home experience. The journey has been rewarding, and I’m excited to see where this takes me next! 
If anyone has questions or needs guidance on similar integrations, feel free to reach out. I’d be happy to share more details or tips I’ve picked up along the way! 