With the Z337, you can wirelessly stream audio files via Bluetooth from your computer, tablet, or smartphone. This 2.1 speaker system delivers rich, clear sound and powerful bass that you can hear and feel. The controller on the back of the subwoofer allows you to adjust the bass to your liking. The wired control unit provides convenient access to the Bluetooth pairing button, the power switch, the volume control, and the headphone jack. Alternatively, a wired connection can be made through the 3.5mm or RCA input. Switching between audio sources does not require unplugging or re-pairing.