... HZ + 1db Consumption Current: 150mA Voltage: DC 7.5, li-ion battery Battery Type: Lithium Battery Size:95x80x35 mmColor: pink ,red,black ... two alternating output transistors that shut off completely when so signal reaches them, yielding up to 70 percent efficiency. Class ... instance, will lose its ability to feed distortion-free AC signal to the speakers relatively quickly, distorting or "clipping" the ...