AM/FM/Bluetooth«/Aux Input Source Options Front speakers: Compression horns mounted in custom left & right fitted enclosures 10" dual-coil 4-ohm Subwoofer in fitted enclosure High-efficiency full-range Class D 400w two-channel amplifier and 400w subwoofer amplifier Includes fitted interface, amplifier harness and amplifier/speaker mounting brackets. AUDIO PKG STG 3 RZR