LiNKFOR 4 Channel Stereo Audio Mixer CX400 Metal Shell Support RCA Input and Output Mini Passive Stereo Mixer with Separate Volume Controls

Device worked great. I was worried it would introduce noise, but I didn't get any. I'm only using two inputs, and I turned the other two inputs down all the way, that may have helped. I used this to connect a music player and a video player to the same amplifier, and it worked great.

Fantastic unit!Im using this unit to mix my audio and microphone for my pa system in my tour bus. Works great! Im sending the signal to a 4ch amp that sends it to the speakers. Works great! Now we can have karaoke on tours hahaha

I wanted to connect multiple preamps to a single amp without having to plug and unplug connections. This did the trick. No noticeable distortion or color added to the sound. The specs does show up to -12db gain but it's not too noticeable during my testing.Unit does feel quality and seems well built. Mixer knobs have a soft touch feel. Only negative I noticed was some static at very low volumes. Not sure if I'll keep it in my system but I will use it until I find a better solution since it is pretty cheap.

Gorgeous. Not expensive. Small ( love that!). And well built. I was completely surprised. I am SO fussy about electronics.. the build, the design.. very happy with this. It lets me have 1) computer 2) Turntable and 3) TV connected to one D-class Amp.. and room for a 4th. Those D-class amps rarely have several inputs, like the old big Amplifiers, so this is the perfect add-on. (Someone wrote that the first input controls the others, NOT true.) And yes, if you have different sources on at the same time, you can end up mixing them and hearing different sources at once.

Works flawlessly out of the box, doesn’t take up much space, and has a nice sleek design that blends in with my setup. For those complaining about loss of loudness, try turning down the other knobs not being used all the way down! You’ll notice a BIG change in noise level

I had to send this back. It's noisy. Two. I connected my two sources and immediately that buzz/ hiss is on my speakers. I need to more a less noisy solution.

I use to output multiple inputs such as my TV from a 3.5mm headphone jack to RCA adapter, a record player, and other sources. It's janky, but it gets the job done for my little audio setup. I haven't noticed any degradation of quality at the volume level I keep it at, but I just set it and have mostly forgotten about it at this point.

Great little unit.