Based on the users' reviews of the "Crank It" app for Denon and Marantz devices, here are three pros and cons, each limited to 15 words: **Pros:** 1. Accurate volume control: Users praise the app's precise volume adjustments, making it easy to control their Denon and Marantz devices. 2. User-friendly interface: The app's clean design and simple navigation make it accessible to users of all ages and technical levels. 3. Reliable connectivity: Many users report stable connections and seamless streaming from their devices to their Denon and Marantz receivers. **Cons:** 1. Limited customization: Some users express disappointment at the lack of customization options for the app's appearance and functionality. 2. Inconsistent volume mapping: A few users complain that the app's volume mapping can be inconsistent, leading to uneven volume levels. 3. No multi-room audio support: Some users with multi-room audio setups lament the app's inability to control multiple rooms simultaneously.