Yamaha Active Servo Technology(YST) for powerful bass response Out Power: 20 W (10W+10W, 1kHz, 4ohms at T.H.D.=10%) Input Sensitivity: 100mV (1kHz, 4ohms at 10w) Frequency Response: 70Hz - 20kHz ( ± 3dB) 8 cm Full-Range Cone, Magnetic Shielding Dimensions(W x H x D): 94 x 245 x 155 mm Weight:1kg/Right, 0.8kg/Left Accessories: AC adaptor (DC14V, 0.8A), 3.5mm stereo miniplug cables (1.8m) x 2

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Please see your Yamaha dealer for details.