JUST MIXER Audio/DJ Mixer - Battery/USB Powered Portable Pocket Audio Mixer w/ 3 Stereo Channels (3.5mm) Plus On/Off Switch (Orange)

UPDATE2: Well, this mixer is working perfectly well now. And, I can't replicate any of the problems I was having with this mixer when I first got it. I was getting tons of noise when running off batteries, didn't matter if they were rechargeable or alkalines, and the USB power pack I was running it off of kept shutting down. The seller was responsive as well and assured me that they stand behind their products. I've hooked up this mixer nearly a dozen times now... used an assortment of different cables, mics, aux inputs. I've used it on an iPhone SE and an iPad Pro. Everything has worked perfectly. I CAN get a little bit of noise if I have the mixer sitting right next to the iPhone when they're hooked up together... but nothing like I was getting before. No clue why it's working now, or why it wasn't at first. The best speculation I've got is that when I first unboxed it, and then plugged in the first 3.5mm mini cables into it's 1 & 2 channels, there was some rough resistance. They didn't go in smooth like you'd expect. They do now, but I'm wondering if there was maybe a bit of metal that didn't get finished out inside one of the ports that got knocked free and was causing some kind of short circuit situation? No idea, but now that it's been working perfectly without any hint of the initial problems I experienced, and that now that I know the seller stands behind the product... I don't have any reservation giving this a solid 5-stars. It works well, it's affordable, it's lightweight, easy to use, and functions well off AAA batteries. I'm even having good luck with rechargeable AAAs. Recommended! :) ___ UPDATE: The seller got back to me quickly and offered to give me a small discount after returning/refunding to Amazon then rebuying the mixer. However, after lots of testing yesterday before concluding something was definitely wrong with this mixer... all of the problems went away after reconnecting everything later at a coffee shop. Then later in the evening at home, it was still performing flawlessly. And later in the night, I tried again... did everything exactly the same as before... but nothing would repeat the same failures I'd experienced. Even running it off Ni-MH rechargeable AAAs was perfectly quiet. Earlier, the Just Mixer was shutting off my USB battery pack as well. I'd assumed it was an auto--shutoff in the pack... and it was shutting of due to low power drain, but even that has stopped. The mixer works fine and I'm unable to reproduce the problems I was having before. I'm hesitant to give this more stars yet, in case the mystery problems promptly reappear. But I'll bump it up to 2-star until I'm certain the problems were just a rare fluke. If it's still working fine in a week or so, I'll update the review accordingly. ___ Hello, I bought this mixer a couple weeks ago. The blue one. I'm getting a lot of noise when run off batteries. At first, I thought it was because I was using rechargeable 1.2v Ni-Mh batteries... so as you recommend on your product page, I tried brand new Energizer 1.5v AAA alkaline batteries. Still there's noise. When I'm using the mixer off USB or a USB battery pack, there's no noise at all. ONLY when using AAA batteries. Is there something wrong with this mixer? Would you like to send me a replacement? Or, should I get a refund from Amazon for this? I bought this MOSTLY because it's says it runs off of AAA batteries. If it can't function without excessive noise while running off AAA batteries alkaline OR rechargeable.. it's useless to me.

---Please read warning below--- If mixing through 3.5mm TRS AUX is something you want to do on the go or while using temporary setups, this mixer is pertty sweet. works well on battery as well as through usb power ( i only use portable power banks when using usb power with this to cut down on noise ). the faders work very well but i did have to take my unit apart because one of the fader nobs was touching causing it to bind slightly. after adjusting how tight all the screws were ( some had to be looser than they came and some needed tightened ) i was able to get them all moving smoothly and evenly. that said there is a little bit of noise in the amp, about as much as you might expect from cheaper gear but its not terrible. the overload limit light does not always come on when it is over loading or comes on when it is not. not the most accurate clip indicator but again it is on the cheaper side. WARNING- if you are using IEM's or headphones be careful not to let the batteries die while your listening through this mixer! the sound is odd and disorienting right before it pops VERY VERY loudly. again only when the AAA batteries die completely while you are plugged into speakers or headphones but it has happened to me a few times and it is not fun at all.

This is the best baby mixer, without question. I've had mine for about three years, traveling with it and commuting. It works great on battery or USB power. The Aux knob has gotten a little scratchy but it's just from dust. I can wipe it back and forth a few times and it settles down. There is no noise from the mixer on either battery or USB if the USB is a separate power supply like a good phone charger. Sometimes it can get some noise if i'm powering it by one of the devices in the mix. If the battery is going out it will squeal. Having used this nearly every day for three years, I can say it is very quiet if properly powered. It's pretty durable for being plastic and feels solid yet light in weight. The blue version is handsome and the orange version is adorable. Makes me smile when I see it. The sound quality is unbelievable for being such a tiny device that can run on batteries. I have used it to mix audio from computers, cellphones, IP phones with proper adapter (that is some noisy signals!), portable music devices, gaming devices, and music equipment. Not all at once of course. It only has three stereo inputs! And these are real, analog channels so there's no processing or lag. Two of the channels have controls for gain and balance. Mostly I keep them in neutral positions but they do work when I need a little boost or to nudge a signal to one side. I'm not sure how loud this can boost a signal. I have had no trouble powering big headphones or iems. Even tried with a planar magnetic Hifiman pair and it got loud enough. I have used it with a small portable speaker but nothing really big or certainly nothing without it's own power supply. I think any type of headphones would be just fine at responsible listening levels. I can't recommend the Maker Hart Just Mixer enough. It's been my little music buddy for a while now!

I bought this mixer so that I could mix sound coming from my Nintendo Switch with Discord voicechat from my PC without the need for expensive audio equipment and it fullfills that role quite well. It's been over a year and a half now of almost daily use and it still delivers solid sound without any real issues. The volume can be controlled for each of the two main audio sources with a nice slider, and there is a "master" one that allows you to easily control volume of the output as well. In addition to this, all audio sources have a gain knob, which allows you to artificially increase the volume in case the source is too silent. This can however reduce the sound quality and produce what is know as "clipping", which is what the red LED titled "over" is for. It lights up every time the output is getting distorted by clipping, so that you easily know how much gain is too much. If I had one complaint about this product, it would be that the jacks are pretty sensible -- one bumb into the unit can make the output go buzzing until you turn the jacks into the exact position they were in before, which can be a bit annoying. I am not sure if it's not a feature of the 3.5mm jack rather than a flaw of the product though, which is why I won't reduce any stars for this "feature" (?). I have seen some complaints over the audio quality when feeded from PC USB, but that seems to be related to the power source rather than the product itself. I am feeding my unit from wall outlet using 2A microUSB charger and the audio quality is pretty solid. Overall, this is a reliable, quality product and a great purchase for the price.

I am an engineer and musician with years of experience making music and recording it. This product works great for line level mixing - computer and smartphone audio jack output - but it has an apparently incurable noise problem if you use the microphone level input (which is why I bought it). Speaking with the distributor it appears many or all of the Just Mixer products have this problem for unamplified inputs. Another problem is the 2 x AAA batteries have to be perfectly fresh or it again develops noise. No rechargeables either, not even Lithium Ion. I also tried USB power from a battery - still very noisy. Until they fix the battery criticality and mic level noise problems I recommend buying something else. There are many good portable mixers out there including Saramonic and Rolls. . You can save yourself the trouble of trying to make the Just work and ultimately returning it as I did.

I have been using Just Mixer S for a few years and was pretty happy with it. My use case was to simply mix two stereo signals out, and use a headphone to monitor, and a digital recorder to record the output. I decided to upgrade to Mixer 3, mostly because I want the pan ability - I want to pan the two stereo signals slightly to each side so they can be heard better in the final output. So after using this device for an hour, I noticed a few major issues: 1. No more dedicated headphone jack - it only has an output jack. Not a big deal, I have a way to work around that when I need to do recording. 2. BIG DEAL: It is hard to find the right power source to power this thing!! When I was using Mixer S, it works happily with batteries or USB power through a power bank. This device, however, has a huge background noise on batteries, making that completely unusable. I tried different brand-new batteries and got the same result. When I use USB and power bank, it automatically shuts off after 10-30 seconds!! Again, this doesn't happen on Mixer S at all. I was finally able to make it work using a USB C power plugged into an power outlet. There is still some slight noise, but bearable. I am giving the low rating mostly because how picky it is with the power source - while Mixer S didn't have all these issues.

I ordered the blue. Its very nice looking and seems well built. But there are a couple of of issues. The USB power port on the side is not a good design. It would be much better if it were on the rear of the unit. But that is only a minor complaint. The big problems are five-fold. 1. This unit is hella noisy. Signal to noise ratio is very low. There is a constant hiss present irrespective of cable quality, lengths, or signal quality/dBv. 2. Receives LOTS of electronic interference from nearby devices. If u keep the cables short and everything away from the device, it was acceptable. Again this was observed irrespective of quality of the cable used. Additionally, if using USB power source, you MUST use a USB wall plug. If plugged into a computer there is a lot of interference (am radio seemingly as I was listening to a prayer request radio show). 3. Zero headroom at line level. Headphone level input? Forget about it. Line level clips at unity gain (slider) with gain knob all the way down. Just no headroom at all. And I'm not even using this to boost the signal, just to mix at unity gain or less. 4. Cross-talk between channels. Not much but it's there....which is partly due to problem 5 below... 5. Even at negative infinity slider position, signal is NOT mute. Signal still leaks through. So over all: Great price & look but poorly considered placement of USB port. Terribly functional quality all around. Update: This product has deteriorated in the week that I have owned it. It is too noisy for any kind of real use. Unfortunately, even it's very nice appearance cannot make up for it's terrible performance. I am revising my 2 star review to 1 star. 2nd Update: Due to EXCELLENT customer service by the seller, I have to believe that my unit may have been faulty. You can't offer excellent customer service unless your product is at least decent. Otherwise a company would spend all of it's resources putting out fires (figuratively... LOL... this thing did not catch fire). Anyway, given all of the other 4 and 5 star reviews and the seller's excellent customer service, I am revising my rating to 3 stars. For a full description of the problem I encountered and the application in which this mixer was used, read the replies to this review. If your setup is less complex (most will be) you may experience a much better end result even if my unit was not faulty.

This product perfectly solved a problem I’ve been struggling with for a long time. For background I know NOTHING about how audio tech works. I play a multiplayer video game that doesn’t have native voice chat because it’s on the Nintendo switch. In order to communicate with people I’m playing with I have to use discord on my laptop. What I needed was a way to listen to the game audio and my laptop audio at the same time. The solutions online involved running the switch audio directly into the computer, and this just did not work no matter the quality of the wires, adding a ground loop isolator (don’t even know what that is, someone told me it could help), separating power supplies, which made the set up awkward and inconvenient. Even when I could minimize the static the audio quality was still terrible and there was a very noticeable delay. Okay, so after a bit of roaming around online I decided to give this little gadget a try. It works PERFECTLY for my needs. Granted, mine are not professional or audiophile needs. What I know is that the device is small and runs on batteries, which makes one less wire to organize. I run one 3.5 mm cable from my switch’s headphone jack to the mixer, and another 3.5 mm cable from my laptop’s headphone jack to the mixer, plug my headphones into the mixer, and voila - with a little fiddling with the volume dials I can hear my game audio and computer audio exactly the way I want. I bought a cheap USB microphone that sits in front of me on my desk to capture my voice, and I’m good to go. Finally!

Trabaja muy bien. Justo lo que estaba buscando desde hace tiempo. Me encanta su diseño

Parfait pour pour des appareils type PO ou Volca , marche sur piles ou micro usb , je m'en sers tous les jours vraiment pratique

La confezione ha un design gradevole, il mixer è più piccolo di quanto mi immaginavo e ciò ne agevola la portabilità a mio parere, nella confezione c'è anche una borsetta di bassa qualità ma utile per il trasporto, il suono è ottimo e il mixer funziona esattamente come nella descrizione. I connettori sono tutti dei jack 3.5mm, il connettore di alimentazione 5V è micro-usb, questo ultimo dato non è riportato da nessuna parte.

As someone who struggles to “switch off” my work brain, I often like to play video games on my PC while listening to a podcast or music on my tablet. This lets me mix both into one set of headphones perfectly. I can even add in a phone (with the headphone mic split out - you can find the right cables on this site) so I can chat with my family as well, all with the game/music sounds completely isolated from the mic. Fantastic, works well and affordable.

This is a tiny little mixer. It's made of plastic and I guess is meant to be mobile. I have mine to mix at my computer and works very well. It doesn't come a power cord or wall wort but rather a set of batteries. I'd recommend getting a micro usb transformer and cord and just plugging it in. If you try to use batteries, it can get a buzz into the sound. I was able to remedy that with just moving around the batteries. I have not had any issue with buzzing using a power cable. I might sound harsh but this is a nice little simple mixer and for that I give it 5 stars.