Maker hart JUST Mixer S Portable 3 Channels Stereo IN Mini Audio Mixer/2 Stereo Output/Battery/USB Power/3C Device

The sound management quality was excellent... simple to operate... and, all controls (gain for each of the three channels and the master volume control) function with great smoothness and linearity! Two quality connecting cables are included— one for power access, the other for audio interconnection. The unit operates on a pair of AAA batteries (included), or via the use of the enclosed USB power cable. Additionally there are two front panel audio output jacks one for headphones, the other for direct connection to an external amplifying audio device. A 3-position slide switch provides a power-off option, an internal battery power source option, or a USB external power feed. A very bright colorful (2 colors) led illuminates to show which power source is in operation. Also, the packaging is first class and the large printed instruction sheet is among the best I’ve ever seen! I use it for my amateur radio station multi-devices audio integration control. It works very well and it is totally free of any 60 Hz hum. I would recognize that the most common use for this mixer is to provide merged audio mixing for up to three devices (I.e. tablets, I-pods, radios, etc.).

First off to start, I was looking for a small temporary mixer between a phone and a computer or 2 computers into headphones. This product was just the one that I found that would fit my temporary needs. There is problems that I ran into but since it was the only minor issues that you can avoid I kept it and just went around the issues. Pros: -mix up to 3 devices with 2 outputs -headphone output -speaker stereo output -4 knobs to control 3 inputs and master output -USB powered so its really portable -smol c: Cons: -slight static noise -after 50% there is distortion if there is a lot of bass coming from one of the inputs -anything past 75% knob turn it sounds just straight up bad -instant noise reduction that is about 25% -this will not drive high end headphones.... -really heavy bass will get it distorted instantly Workarounds: -put all input devices on max volume -at most keep any of the 3 inputs at 50% -have the master knob put up all the way at 100% -add a DAC after the output for headphones -use a clean power source that is not connected to audio usb port that would be on a motherboard (USB 2/0 or 3.0) -have good cables for the inputs/outputs What I wish was better or had: -be able to have any audio go past 50% without distortion -provide another cable Overall I like the device, it gets me around my issue but the device isn't perfect. I will be keeping it and be using it at for now until I move and get a bigger mixer like the GoXlr, Behringer 502, 802 or 1204.

You shouldnt expect too much from a mixer this small. The levels are a bit sensitive but it works perfectly for what I use mine for. I have a cheap video projector that my wife bought me. I keep it on my nightstand and project my nightly television time onto the ceiling. I use a small Bluetooth speaker for the sound and it's amazing. The problem with the speaker I'm using is this: There is a built-in noise filter or compression in the aux input. When certain movies grow quiet the sound cuts out. It's very annoying. SO, I take this little MIXER and use it to boost the horribly low audio signal from my projector and now I have no low audio cut offs. Also it has USB C power OR battery. Problem solved. So far 5 stars. In fact, I want another one.

Totally does what I wanted which is mix my phone and keyboard together for little goof off jams. It works well with batteries. I accidentally left it on over night once and it was still working in the morning. There's occasionally a little line noise but like I said I'm doing this to entertain myself not making this the centerpiece of a studio which would be ridiculous.

I needed a mixer that combines inputs from three 3.5mm jack audio sources into one output, and this seemed like the perfect one for my live streaming setup. Once I received it, I tested it with the following audio sources: 1) Laptop audio via headphone/microphone combination jack 2) Video game console audio through monitor headphone jack 3) My commentary audio via Blue Yeti headphone jack Listening to all audio sources works wonderfully with minimal noise once all gain knobs have been properly adjusted. HOWEVER, once I started recording with my Blue Yeti (a USB condenser microphone), there was a horrible noise coming through the headphones. This noise only disappeared when I removed both the computer audio and game console audio cables from the device, which defeats the purpose of using the mixer. As a work-around, I was able to minimize the noise by using the Blue Yeti as a speaker for my PC, then mixing the microphone headphone jack with the game console monitor headphone jack. This works, but it is not ideal, as I would have preferred to control the laptop audio on the mixer separately from my microphone monitoring audio. A ground loop isolator on my inputs may help, but I haven't gotten the chance to try this yet. Admittedly, this is a marginal use case, so let's go over the pros and cons to this mixer: Pros: - Small form factor make it easy to fit into your setup and to transport. - Battery or USB power sources allow this mixer to be used portably. - Simple controls make the mixer easy to use and understand. - Combines playback sources effectively and with minimal noise (once the input gain knobs have been set correctly. - Low price make this suitable for casual use cases and low end applications. Cons: - High amounts of noise when recording with a USB microphone (as described in my example above). - Simple controls also mean less control over output (only input gain and master volume output). - Only comes with one TRS audio cable. Some important notes: Make sure that your input devices are turned up to maximum, then adjust the gain knobs accordingly. Having the gain turned up past 50% results in a lot of noise on the output. Make sure you are using TRS audio cables, as all of the input and output jacks on the mixer are TRS. Overall, the mixer does what I need it to do, albeit with some compromises. It's not ideal for my application, but it's a good value. If you need a simple solution to combine three playback audio sources, this is a good choice. But if you need something to combine audio for a live streaming setup, for example, I'd advise that you look elsewhere.

First off, I have many years of experience in pro audio. I ran a DJ / mobile audio company for some time in my younger years so I have plenty of experience and exposure to audio devices and their use. I wasn't expecting much from this mixer, my use case is extremely simple. I have two computers on the same desk, and I wanted to use a single set of speakers for both computers, rather than having to switch back and forth. Very simple. I didn't want to invest in a small desktop studio mixer, so I thought I'd give this a try, but it was a complete failure even for this simple use. After wiring both computer line out to the mixer, and setting the gain to about 25-30% on all inputs and output, and connecting the USB power, I couldn't hear anything. I reconnected my speakers directly to the mac, and could clearly hear the music playing at normal volume. Mac volume was 100%, and spotify was 100% volume, speakers were at maybe 15% volume, which is comfortable level. Plugged back in to the mixer and again couldn't hear anything. I turned up the speakers and could finally hear music at a VERY low level. Again, double the original speaker volume from when the speaker was directly connected to the source. I was hesitant to increase gain on the mixer as I knew the quality would suffer, and I was right. As soon as I increased gain, audio quality tanked, and noise increased dramatically. Increasing input and output gain to what I would consider original input volume levels was unlistenable quality-wise. I gave up and returned the unit because it is worse than useless. Not only does it not work, it also LOWERS input volume to unusable levels, and when you increase gain to attempt to hear your source audio, the quality is so low it is unlistenable!

I really get frustrated with products that do NOT do what they're advertised to do. So yea, no frustration here! This little thing is exactly what the description says it is, and it does it simply and well. If I were to come up with something to complain about it would be that the individual volume controls are subtle, there's not a lot of range. I got this to be able to mix two computers audio when I game, so I can also stream videos on the other. I simply used two 3.5mm male-to-male cords to go from the front headphone jack to the input ports on this mixer, plugged in a set of headphones, and I was off and running - easy-peasy! I was surprised to see there was an additional output jack (didn't notice it in the description), and I just plugged in an old set of desktop speakers - now I have the ability to go without headphones during the day when I'm the only one in the home office, and switch to 'silent mode' with headphones when folks start coming home. Thanks for a solid product at a reasonable price point!

Testing this out with the included AAA batteries and garden variety Koss headphones, the mixer S seems to do what I want it to do (fast easy mixing in a lighter and smaller package than my behringer xenyx 502 and without requiring 1/4" mono adapters + aux to rca cables for every non-dac input) with acceptable caveats. The other reviews are dead on. Push inputs past 50% and they distort. To the point where at max the level of distortion could almost be considered an effect. Luckily the master volume knob doesn't suffer this problem so max the volume on your sources and adjust the master volume knob as needed. The headphone out is significantly louder than the speaker out so I have to assume there are additional resistors in the path of the speaker out. Flipping the power switch on sends a momentary semi-loud signal to your output (like that of old powered computer speakers Jbl used to make in the early 2000s). The battery compartment door seems a bit brittle so I can see that failing at some point. I've tried it with 2 inputs on battery power thus far. If I find additional notable pros or cons to the mixer I'll try to update but this device seems rather good for it's niche despite the caveats. In terms of tiny, cheap, aux/3.5mm-only mixers, it's only competition seems to be the Little Bear passive mixer. Edit1: The loud 'puff of air' signal sent to the outputs when powering on the device is not present when connected to USB power, regardless of choice between USB and battery power mode. The noise floor (background hiss/hum of the mixer being powered both on battery and USB) is noticeable on low impedance open-backed Koss headphones via the headphone out but is low enough (with ksc75 and kph30i specifically) that a fan/open window/background sound around you of any kind will obscure the noise floor entirely. In a quiet room, and probably even more so with setups using amplification, the noise floor is noticeable. As an anecdotal point of comparison, the noise floor here (Koss/headphone out) is far less of an issue than the noise floor when using ModHouse Argon Mk3s on an Emotiva BasX A100 (headphone out with the resistor bypass jumper installed).

L'ho acquistato per fare RSI (remote simultaneous interpreting) perché consigliato da una brava collega e l'ho usato per un po'. Non so perché, ma a un certo punto sentivo un brutto rumore di fondo. Non avendo tempo di approfondire, sono passata a un mixer più professionale. Lo tengo ancora perché è piccolo e molto leggero, sperando di risolvere magari un giorno il problema. Ma forse è proprio la leggerezza e scarsa solidità a renderlo meno affidabile.

Ich nutze es mit mehreren Bluetooth Transmittern um mehrere Geräte mit Ausgabe an einen Bluetooth Kopfhörer zu senden. Das klappt soweit gut, allerdings gibt es manchmal leichte Störgeräusche, liegt aber an den Adaptern. Bin zufrieden.

Ik heb hem in een hoekje van mijn (oude maar uitstekende) Yamaha klavinova staan waardoor ik een aantal extra bronnen door de speakers van de klavinova kan laten klinken: - muziek uit mijn ipad om mee mee te spelen - mijn elektrische Roland sax - geluid van de klavinova zelf via midi en een Hammond emulator in een iPhone of iPad Signaal/ruis verhouding lijkt goed in orde

Exactly what I needed to be able to use my work laptop, while listening to music from another source. No fumbling with a screen and an interface to mute the music: just turn down the volume. Sound distorsion at high volume levels though.

Works well enough on battery power but as soon as you plug it into a USB lead to power it, there is a very noticeable 60 buzz. Very disappointing considering it wasn't priced like a toy that it turned out to be.