Small and Light - The perfect way to mix multiple sound sources,small and light body, you can easily carry any place, and start your music tour anywhere. The mixer adopts high-end IC module, multiple protection, secure and stable. Excellent curcuit design ensures a fine sound quality and stable performance. Stereo Output and Bluetooth Input - Stereo headphones can be connected to this jack for convenient mix monitoring ,The Bluetooth function allows your mobile device to be easily . Stereo 4 in / 2 out Configuration - 2 stereo channels (3.5mm) allows up to 4 mono input connections. The mixer can be connected with an external amplifier, passive and active speakers.