Cyber Acoustics CA-2011WB 2.0 Amplified Computer Speaker System Driver: 1.5 x 3 high efficiency 4 ohm drivers Frequency Response: 220Hz to 20kHz Signal to Noise Ratio(SNR): 58dB Power Supply: AC adapter; UL/UCL approved Dimension: (H) 8.5 x (W) 3.25 x (D) 4.5 Weight: 1.4 Parts: 1 year limited Labor: 1 year limited