2 Inputs. Each input has 2 channels that accept RCA cables = red, white. Channel 1 and Channel 2.
By pressing a button on the top of the device, Channel 1 can be switched to Bluetooth input and then it operates without an RCA cable.
If it is on Bluetooth and we connect a USB stick, we can select with a button to play the USB stick on Channel 1 and then the Bluetooth is disconnected.
Each of the 2 input channels has bass and treble adjustment and gain = volume. It does not have effects.
2 Outputs. It has a Master output that accepts RCA cables = red, white and a rec output with RCA cables = red, white. Both outputs are connected to active speakers, each speaker having its own built-in amplifier. If the speakers do not have an amplifier, each output of the mixer (Master, rec) can be connected to an amplifier. Only the rec output is optionally connected to a recording device to record the sound. Otherwise, the rec output is connected to active speakers or an amplifier.
1 Microphone input. On the front near Channel 1, there is a microphone input with adjustable volume. A microphone or an output from a radio or an output from an MP3 player, etc., can be connected there.
1 Headphone output. On the front near Channel 2, there is a headphone output with adjustable volume. If headphones are connected, then Channel 1 plays on the left headphone and Channel 2 plays on the right headphone. Alternatively, one speaker can be connected and the sound volume can be adjusted.
Cross fader. The sliding switch selects Channel 1 on the left, Channel 2 on the right, both channels in the middle. The overall sound volume is adjusted with the Master button. The microphone and headphones have separate buttons for adjusting the sound volume.
How I used it. I connected my computer via Bluetooth to Channel 1 to play its sound. I connected the sound from the television to Channel 2. I connected the sound from the radio to the microphone.
I connected 5 active speakers to the Master output using a 6-port sound splitter. I connected a soundbar to the rec output. This way, I can listen to the sound simultaneously from the computer, television, and radio through the same speakers, and I can choose which one to listen to each time by adjusting the sound volumes accordingly.