FIFINE Ultra Low-Noise 4-Channel Line Mixer for Sub-Mixing,4 Stereo Channel Mini Audio Mixer with AC adapter.Ideal for Small Club or Bar. As Microphones,Guitars,Bass,Keyboards or Stage Sub Mixer-N5

It is advertised as low noise. In the application I was using, it, in fact, had a loud ground loop buss that I couldn't even eliminate with a ground loop buzz eliminator. It might not be a fault of the product at all, but I couldn't use it and returned it.

Good product

I really wanted to like this. It’s a nice build and is quiet on the inside ….but on the outside … the dials are just horrible and I mean HORRIBLE to use! Whoever made the decision to put smooth shiny aluminum dials was going for looks and not function. DO NOT BUY if like me you are in wanting to quickly change instrument on stage and turn one up and one down quickly …these dials will screw you over! You could buy some cheap plastic dials to overcome some of the issues but that’s throwing money at the problem. DESIGN FLAWS: 1/. The metal dials are highly polished and so have no grip to the point where when you go to turn the pots (which are quite stiff) the dial actually slides in your fingers as you twist. It takes several turns of the dial to turn up or down fully. 2/. In addition, the white swoosh marker graphic on the casing showing 0 -10 (180 degrees of rotation) is not matched to the amount that pot actually turns. It actually rotates much further through 270 degrees ie. 3/4 of the way round from ‘nothing’ to ‘max’. This amount of rotation makes it hard to figure at a glance if you are at full volume or whether just a quarter of a turn away, you are actually on zero volume (see photos - the dial on the left is on minimum, the dial on the right is on maximum). 3/. To make matters worse the top of the dial is highly reflective so confuses seeing where the top of dial white line is at as there can be several reflections . 4/.It also arrived nearly three weeks late but that’s probably Canada Post as a courier. It’s going back as the dials make it unusable on stage for my purpose.

I have been thoroughly amazed by the quality of this mixer. This mixer takes 4 sources and combines them into one. But it doesnt just combine them, it runs each source through its own mini amp. This allows for good volume control of the sources, along with preventing any sort of feedback or noise traveling back up the wrong way. It keeps each source completely separate. This separation keeps the noise incredibly low. On top of that, each little mini amp is incredibly clean. In most situations, I might as well be running my DACs straight to my proper headphone amp or speakers. If you have any trouble with static or noise, check the wires you used. Any sort of noise introduced from a bad wire or adapter will be very audible. With one cable, I could hear when I moved my mouse or dragged an element in a work space. I couldnt tell you how the wire was picking it up, but swapping it and the 1/4inch adapter for that input fixed the issue. If you have noise, its likely not because of the mixer. In the end, I love this mixer more than any regular receiver. No input switching, just listen. I originally got this so I could listen to my records without having to stop watching streams or working on my computer. I didnt want to have to get a separate sound system just for the record player. I also didnt want to have to switch between the 2 because i needed the audio from my computer as well. Combining the signals with a regular splitter was a big no no. Any time the record player wasnt running, it would distort the combined signal. Now i can listen to records, play/work on my computer, with an additional source for my robot voice assistant to also crank out when i ask it to. Just for me, its simple and easy. Im sure that any Pro user, actually using this mixer for a professional, more intended purpose, will find this little mixer to be absolutely perfect for most applications. fifine have really proven themselves to be an amazing company that cares about audio.

Compact good excellent working

Works great! It has enabled me to input 3 guitars with pickups plus a microphone into one channel.