Lepy LP-2024A-HA LP-2024A+ Hi-Fi Audio Stereo Power Amplifier Car Amplifier, 3A Power Supply LP-2024A+Using T-type digital technology output power20Wx2 RMS. Tone/Direct switching allows for customized listening via separate Bass and Treble adjustment or original audio source signal can be passed through without enhancement. Tone/Direct switching allows for customized listening via separate Bass and Treble adjustment or original audio source signal can be passed through without enhancement. With power supply supervisory circuit When voltage is higher than DC14.4 V it van be protected by itself. Compact size makes this amplifier great for projects and DIY audio applications