Edifier M1550

Total power output: RMS 4 x 3W + 4W + 10W x 1
THD + N (testing level): 10% 
Signal to noise ratio: ≥85dBA 
Distortion: ≤0.5% 
Input sensitivity: Satellites: 350mV ± 50mV | Subwoofer: 80mV ± 20mV
Input impedance: 10KΩ
Audio Input Type: 3.5mm Line in, Headphone jack
Adjustment: Wired remote control, volume control, mute/play button, bass control on subwoofer
Subwoofer / bass unit: 4 inch (106mm), Magnetically Shielded, 6Ω
Midrange / high unit: 2 inch x 3½ inch (50mm × 90mm), Magnetically Shielded, 4Ω
Remote control: Wired: Volume adjustment, mute/play button, Headphone jack, LED indicator light
Dimensions: Subwoofer: 158mm x 226mm x 223mm | Satellite front/surround: 68mm x 166mm x 86mm Center satellite: 160mm x 66mm x 60mm (WxHxD)
Weight: ≈4.50Kg (net)