Power cable,Connect power supply

Audio cable connect with amplifier audio input port

HDMI cable connect with TV

Speaker cable connect amplifier with speaker

Amplifier has two team connection port

Two team cable need to connect on the same team connection joint.

Red cable connect with red terminal.

White cable connect with black terminal.

The other end connect with speaker.

Same method,Red with red terminal,White with black terminal.

The other pc speaker is connected with same method.

Connect power supply.

Connect audio cable between karaoke machine with amplifier.

Audio cable connect amplifier audio input port.

Red to red port.White cable to white port.

Switch the amplifier working mode.The mode must be in line with the cable connection. This is very important,If the working mode is not inline with the cable connection, sound  could not output.