HK Connect is a free Android app developed by Harman Consumer Inc. that works with Harman Kardon Onyx Studio 4. It is designed to help users configure their speakers and upgrade their software. With this app, users can easily adjust the speaker settings and personalize their audio experience.

The app has a user-friendly interface that allows users to manage their speaker settings, including volume, equalizer, and party mode. Moreover, it offers the latest software updates for the Harman Kardon Onyx Studio 4, ensuring that users can enjoy the latest features and improvements. Overall, the HK Connect app is an essential tool for users who want to get the most out of their Harman Kardon Onyx Studio 4 speaker system.