Amazon.com: Audio Mixer Ultra Low Noise 4 Channel RCA L/R line Levels Control Box Passive Mixer RCA Inputs Output Separate Volume Controls for Small Club Bar or Recording Studio : Electronics
Depusheng 8/12 Channel Audio Mixer: Professional Sound Mixing Console With Usb, Xlr, 48v Power & Rca Input/output For All Skill Levels - Temu
Setting Mixing Levels For Each Instrument - YouTube