Simple, Yet Versatile: The Stage Right ix4B is designed for simplicity, focusing on functions most commonly used in live sound and recording applications. It includes powerful features not found on comparable mixers, such as Bluetooth connectivity, delay effects, and USB recording. This makes it ideal for a multitude of applications, including live sound, recording, podcasting, streaming, or even as a home A/V receiver for its Bluetooth functionality. No other mixer in its price range can claim the same features as the Stage Right ix4B 4 Channel Live Sound and Recording Mixer. Bluetooth Connectivity: One of the most impressive things about the Stage Right ix line of mixers is the fact that they is the only high quality live sound mixers in their price range to feature Bluetooth audio connectivity. Rather than relying on a built in Bluetooth antenna like many other devices, the ix4B features an external antenna to ensure reliable, high fidelity audio streaming. USB Recording: Audio