Trust Audio Vigor 2.1 Subwoofer Speaker Set (TRS-20244) - Frequency response: 20 Hz - 20000 Hz, Speaker impedance: 4 Ohm, Audio input: 3.5 mm, Line-in, Power output subwoofer (RMS): 30 W, Input Power source: wall socket, Compatibility Compatible Device Types pc, laptop, Headphone connection, Connectivity: Connection type wired, Color: Brown