2 Channel Stereo Audio Mixer - Metal Shell, AUX Interface Support 2 In 1 Out Mini Stereo Sound Mixer Includes 1-Meter Audio Cables - For PC, Phone, Laptop, Headphones

I bought a new computer with integrated audio. I like to feed a line-in signal from a microphone preamp and sing along to tracks being played back on my computer. On this new computer, there was too much latency between what I was singing and what was heard on the computer's speakers. The usual solution is to buy an audio interface that has direct monitoring. I thought I'd try a simpler approach and use a Y-adapter to plug the line-in into both the computer and an input to a 2-channel stereo mixer. Then I could plug the line-out of the computer into the other mixer input and feed my speakers from the mixer out. All I needed is a basic mixer, hopefully USB powered for simplicity. The Cooidea looked like the perfect solution.The Cooidea 2-Channel Stereo Mixer arrived in a cardboard box along with instructions, a power cable and one aux audio cable. It appeared to be very solidly made and was very easy to install. I wired it according to my plan and turned off "Listen to this device" in my computer's settings for line-in. It worked perfectly, with zero latency. All I had to do is set the audio levels for line-in and media player for the correct vocal vs music balance.

This is 100% exactly what I needed. I stream on Twitch using OBS and capture my Xbox through a capture card. Ever since I switched over to a different computer I can't get OBS to let me hear capture audio without doubling it and making a giant sound design mess. My solution of course, was to just plug my headphones into the game and not hear the stream. Except that didn't work when I had to play with someone else and talk to them in discord. I had earbuds inside headphones. It was a horrible mess. My ears hurt just thinking about it.What this product allows me to do is plug in my Xbox audio straight from the monitor I have it on from one side, and my PC from the other side, and plug my headphones into the mixer from the out port. Tada! Seamlessly combined perfect audio! No popping. No feedback. Thank you so much! This is the best invention ever!

I'm always skeptical using audio mixing devices over the years. There is always some hissing or noise. But this one doesn't. It's to send signals from two computer audio outputs to a set of speakers. Noise is usually present processing audio from computers for me for some reason and it's such a relief to hear zero noise with this little mixer! Highly recommended!

At first I couldn't figure out why one of the ports had a little piece of metal blocking my audio jack from plugging in until it dawned on me that someone assembled it incorrectly. The board was put in backwards which made the arrows on the outer case point to the wrong places. The audio jack was actually the power port. To avoid confusion in the future, I took out the 4 screws and flipped the board around so the ports were in the correct places. Works great now. I had some buzzing at first coming out of my speakers, but then found it was a specific audio cable I was using (mine, not theirs). Replaced that and now have no problems.

Used this to combine both my PC and my Android TV Box to my PC Speakers and works perfectly. No static or interference.

The product works as advertised, BUT: If you take the signals directly to an amplifier, they are loud. Once you put this device in the line to mix the two signals, you have to turn the amplifier to its maximum and it is still not as loud. This loss of audio power has me discard this device.

Works fantastically for my use caseI have two desktops I feed into it and have one set of headphones so I can listen to both feeds at the same time

The small, compact size is useful for easy transportation. I use it in 2 locations to combine laptop sound and Roland keyboard outputs into a single headphone output. Volume and tone for each input are adjusted individually by the laptop and keyboard. Useful also is the ability to power the mixer from USB outputs of either the keyboard or the laptop. I highly recommend this mixer for 2-channel use.