Digphone Black Lepy LP-838 Mini HIFI 2.1 Bass Stereo Audio Amplifier AMP 25W*2+45W*1 RMS For Home Phone Car vehicle Motocycle Bicycle Without Power Supply Support both L/R RCA and 3.5mm Stereo inputs. 3 Channel output, High quality stereo sound and heavy bass output, 25W*2+45W*1 RMS output Light weight and sturdy aluminum enclosure Tone/Direct Switching Please note that the power supply is not included!