Audio2000'S AMX7304 USB-Powered Four-Channel Audio Mixer with USB Interface and Sound Effect

Just a disclaimer, I sent this item back at the time of typing this review. The reason being is I feel it didn't work with the type of setup application I was using it for which is live streaming. I purchased this to use with the Neewer Condenser Microphone Kit - NW-700 because I felt that I needed to have the ability to tweak the sound and gain of the microphone so that it could be heard while I'm streaming and playing games. I felt a usb interface was going to be better than using the 3.5mm audio plug that the microphone came with. I chose this mixer because it was USB powered and had 48v phantom power.Setting it up was a breeze. It's basically plug and play. No drivers were needed. I had everything set up and connected with in a matter of minutes. You do need to make some settings changes to your PC and applications depending on how your set up is, so make sure to go through all of those thoroughly when setting this microphone up. I won't go into full detail on that here.I was happy with how this made my mic sound. I was able to be heard by my viewers and by the players I was playing with and talking to through discord. I also was able to dial in the sound to cut out some of the back ground noise which can be distracting. I had it set in a pretty good place and was happy about it. It was more than I was able to do with the standard amplifier box that the mic came with, which basically just supplied the power. For the mixing portion I had to result to using Voicemeeter. Voicemeeter made things a little more complex for what I wanted so that's where this mixer came in to play.That being said, I noticed after some time, whenever I would be playing for extensive amounts of time, the mic would suddenly just stop working. I would get messages in my chat, or my friends in discord were asking me if I was still there even though I had been talking the entire time. They couldn't hear me. I would have to go into my sound settings and disable the device, then re-enable it and it would start working again. I worked with this for a little over a week now and I noticed about 3 hours into streaming and gaming is when it would start to act up, and it would keep happening after words. When I was done playing for the night, I would turn off the phantom power on the mixer so that it would essentially turn off the mic. Just recently before I decided to send it back, Instead of the mic just stopping like it was doing, the entire mixer would just disconnect from the PC, then after a few minutes would reconnect. When this happens, in the middle of a game and streaming, I had to go back to my backup which is my headset. It gets frustrating when you switch to your headset, then the mixer decided it was gong to re-connect. I had to completely disconnect it from my computer as it was beginning to be a headache for me.My reasoning for giving this 4 stars even though I was having such a difficult time with it, is because I don't entirely feel it was the mixer causing the issues, but perhaps the application i was using it for was not the best use for it. I also could be wrong and it was the mixer. I just don't know and don't really have time to sit and try to figure that out because that takes away from me doing my stream and playing my games. So I decided to return the mixer and go a different. route.The overall mixer design and layout is very nice looking. I wish it had worked out for me because the price was really good for what it offered.

Solid steel feel, really a 6 channel mixer, powered by the one USB cable to the computer which is hard to find and great, seems to have decent sound and mostly sane layout. Channel 5/6 is either stereo from USB or stereo from Bluetooth. 3/4 is either stereo or if only 3 is connected it is center-pan mono. But 1/2 have no way to make them L/R! They are both only center-pan. I wish there was a button to make 1/2 map to L/R... It is a perfect fit for me, I'm sometimes using headphones and sometimes the powered speakers; sometimes using the computer input and sometimes using another stereo input; with 3/4 and USB and monitor speakers and headphones it does everything and without a power adapter; I even have 1/2 free. I could live without the delay - honestly, if you're in a situation (live vocals presumably) where you want the delay, you probably also should want a higher end mixer... Suggestions for the designer: Replace the effects-mute button with a 1/2=>Stereo button... Also, if I'm recording to a computer, I would need _another_ way to monitor - if the USB from the computer is mixed up to hear, it will also go _back out_ with the mix to the computer over USB. Not a problem for me personally as I have a couple of other better preamp/AD interfaces, I'm just going to use this for _output_. This thing is close to dead-on perfect as the output mixer, and good as an input mixer, but wouldn't quite be comfortable as both at once, due to the USB loopback. Summary: 1&2 panned center is my only *real* nit. For straight recording (not overdubbing) it would be OK. If you want to record a new track and listen to prior tracks in a DAW, you're going to need your speakers or headphones otherwise connected due to the loopback issue, but for many many many use cases that isn't an issue. I would choose this one again in a heartbeat out of all the options under $100! Even up to twice the price, I can't find another one that (a) is solid-build (b) is usb-powered over the data link (c) has separate headphone and monitor output levels (d) is at least 4 channels preferably 5 or 6. I think it is a "4 channel mixer" if you're mixing out to computer, but a "6 channel mixer" if you're mixing out to speakers or phones from a computer (the case where you're mixing the usb-input back to the usb-output on purpose is definitely an edge case...)

I've only had this a few days but it seems like a nice little mixer. It's well built and has the right types of inputs for solo or duo musicians. The knobs are solid and the buttons seem strong. It's labeled well and the text is fairly easy to read with good color coding. I tested all the inputs, including Bluetooth, and everything seems to work. The included delay effect works but I didn't find it all that useful. It only works on Channel 1 and sounds like a spring reverb at min and an echo at higher settings.There are a few minor issues I've noticed. First, if you use an external power supply instead of connecting the mixer to a computer then the power supply LED light will flash even if you have USB selected. Presumably this is the Bluetooth pairing light but it's really annoying. The only way I could get it to stop flashing is to pair it with a Bluetooth device but I don't always want to do that. Second, I noticed some bleed into Channel 1 when Bluetooth is connected. You can hear some sort of pulsing sound when this is connected and you turn it up. I tried connecting a few different phones and got the same result. Direct input on channel 3/4 did not have this problem. Last, I noticed some noise when the USB signal was turned up but it seems manageable.Overall, this is a good mixer. I hope they will fix the flashing LED issue I mentioned above or let us know if there is a workaround. I will update my review if anything changes.

Great product for the price and quite sturdy in a steel case. Another plus is powered by USB not a wall outlet. Would highly recommend it.