TuN Express is a free Android app developed by JL Audio Inc, designed to streamline the setup and control of compatible JL Audio DSP-based amplifiers. With TuN Express, users can easily configure a basic DSP feature set on their amplifier using their Android smartphone via a Bluetooth LE connection.

The app automatically recognizes compatible JL Audio products and provides a user-friendly interface optimized for each specific product. It also includes a simulation mode that allows users to simulate any product or perform offline setup.

TuN Express 3.1 is specifically compatible with JL Audio VXi and MVi amplifiers, but it is not compatible with FiX or TwK processors. To use the app, users will need to have a VXi-BTC Bluetooth Communicator accessory connected to their VXi or MVi amplifier.

With TuN Express, JL Audio users can conveniently set up and control their DSP-based amplifiers directly from their Android smartphones, making it easier than ever to optimize their audio experience.