Rolls MX51s Mini-Mix II 4-Ch Mixer with Headphone Output

Pretty good mixer if you are looking to add extra inputs to your board or already existing mixer. If you raise the levels past half way it gets distorted. We typically keep it a bit below half way and it works out great.

If you're looking for a quality, compact stereo mixer to combine multiple audio sources and output to a single pair of headphones or speakers, this device works perfectly. Measuring roughly 5 inches by 3 inches, its construction is solid and surprisingly made in the USA. All of the ports feature a nice and tight fit and the knobs are silky smooth. It's powered by a power adapter which is included. It has four separate channel inputs and two output options. Channel 1 is an XLR input with phantom power option (which you can turn on/off). Channel 2 input is via RCA or 3.5mm. Channels 3 and 4's input are RCA. Output is via RCA or 3.5mm. There are more than enough ways you can set this up depending on your devices and needs. If you need to use 3.5mm, either as an input or output, you can simply buy a 3.5mm to RCA cable adapter. Some reviews complain about static, hissing, or lowered volume; I have not encountered any of these issues under normal use. As long as you are using quality cables and your source output devices aren't cheap, no audio issues should be encountered. I can easily control each channel's volume independently with no loss in audio quality. Turning the knob all the way down will completely mute the source and turning it up has more than ample volume (although this may vary a bit depending on the quality of your output device). The only actual hissing I can hear (using headphones) is when you get near max volume on the knob when all other channels are silent. At the volumes you encounter the hissing at, you would blow your eardrums out. Under normal use, you don't hear it at all. There are obviously several ways you can hook this up. For reference, I am using it to connect the audio from my PC and the audio from my game consoles (PS4 and Switch) and have it all output to my headphones. In my case, the game consoles are hooked up to a Denon A/V receiver and I am using the headphone output from it to connect to the stereo mixer. For the PC audio, I am simply using the front 3.5mm output and have it connected to the stereo mixer. From the stereo mixer, I have the output audio plug into an external headphone amplifier which then finally outputs it to my headphones. My headphone amplifier definitely helps with overall volume, but even without it, the stereo mixer has plenty of power to output enough volume even to my higher ohm headphones from Sennheiser and AKG. Even hitting about halfway on the knob gets too loud and about a quarter of the way is good enough for normal use. With this particular setup, I can now get game sounds and if needed, I can stream music from my PC at the same time. Or I can use voice chat on the PC instead of using Playstation's party chat or the Nintendo Switch's currently horrible (non-existent) chat system. And of course if I just want one audio source, then I can simply turn down the knob on the stereo mixer to mute it completely. All in all, this is an excellent compact stereo mixer which makes life easier if you have a setup requiring multiple audio sources outputting to a single headphone/speaker setup at the same time. It works well as somewhat of an audio switcher as well without actually having to switch inputs or cables around. If this sounds like what you need, I wouldn't hesitate to recommend this product.

Great Mixer! I recommend it to anybody...

It does just what I wanted it for. It is well built - feels heavy duty. I would highly recommend it.

(i thought this unit was actually twice as large as when it arrived from the photo but it was as described) as described, arrived fast, no problems

Mixer works by combining audio from different sources. Volume is loud. However, there's a major flaw - there's a loud buzzing noise in most of the level settings. I am able to find a setting that minimizes the buzzing, but that pretty much eliminates the use of the level adjusters.