Ujjdwiurgh DC 5V-12V AU-401 Stereo Audio Mixer 4 Input 1 Output Individually Controls Board Sound Mixing DIY Headphones Amplifier Easy Install Easy to Use

It can directly drive the headphones or connect the amplifier, the interface is 3.5mm stereo socket. Each potentiometer individually controls the volume of each channel, and the volume does not affect each other. The Working Power Supply DC 5V-12V DC5.5 x 2.1, and the magnification is about 2 times. This is a stereo audio mixing board with four audio inputs mixed into one stereo output. (Four Input.One Output). The quiescent current is about 8ma, and the NJM3414 low-voltage and high-current operational amplifier is used. The maximum driving current is 70ma, which easily drives various earphones and external amplifiers.