Spin live in front of an audience with the Pioneer DJ DDJ-FLX4 + Pioneer DJ DM-50D-BT Black. Because of the grooves on the speaker's channels, there's less air resistance, so you hear a heavy bass and the rhythm of the music clearer. You can connect the speakers via the RCA connector to the controller. The controller is suitable for advanced DJs because of the various possibilities with effects and your own microphone. Because of the clear control panel, you can easily control the controller. You can use all types of effects in your mix with the included software. This way, you can make many different mixes.