Nux MG-30

Current latest firmware: 2.5.06
Buyer be aware -- update your firmware as soon as you get the unit. If you make your own effects and then update the firmware, unit resets to stock effects.

NUX recommends you use the QuickTone editor app to backup your effects before updating firmware. However, my (and many others) QuickTone app could not recognize the MG-30 until I updated the firmware. So it was a catch 22 and I lost the 1 effect I had fine-tuned (not a huge pain, thankfully)

Pros:
+ FX Loop for 4-cable method for cheap -- I think the next MultiFX with a Loop is 50% more expensive
+ USB C, welcome to the future
+ This thing has an Uberschall, which sounds pretty convincing, and a Diezel, which sounds pretty crushing
+ Stock IRs are OK -- you can definitely dial in something fun and popping
+ Accepts 3rs party IR -- I already have my favorite IR on this thing and I am happy

Cons:
- Can NOT split L / R to have IRs on one end and off on the other (to connect to amp and line out separately). I wish they would add it with firmware -- if you need that, follow dev updates, I guess. The NUX Cerberus has this, come on :(
- Using it in the FX loop with 4-cable method degrades the sound a little bit. Steals high-end sparkle and adds a small upper-midrange hump. Forgiven, due to price, but beware if you want pristine signal!
- Can only load one IR at a time! Yes, when you are using the QuickTone app, you can set up a full library of about 20 IRs, but once you disconnect the NUX MG-30, it is left with the last custom IR you were using! Not a huge deal -- you are likely to pick the one IR you like best for playing live with. But, it does feel a bit stingy.
- As an interface -- I am not super-happy with the latency
- As an interface -- can't get true stereo, it seems the unit only goes to stereo for rotary effects
- As an interface -- Not enough options for USB and signal mix. I wanted this to double as an interface for my iPad (samples) as well as an FX unit on stage. However, USB signal mixing options don't allow for this. Can't be too mad at this price point! I was pushing my luck.
- I am worried how long those directional knobs will last
- Tiny wah pedal is uncomfortable for precise swells

I ended up returning this as it doesn’t meet my demands for live performance. It’ll do great for a starting musician or someone who plays mostly at home.

I am quite confused that NUX let the "youtuber presets" pass QC, if there was any type of QC?

The majority of the presets sounded so bad that I honestly thought my unit was broken. I was gonna contact Thomann after the weekend and request a return.
After that I decided to try and build some patches myself and imported some that I found in a Facebook group.
To my surprise the unit wasn't broken at all and the patches from Facebook were way better than the default ones.

So if you buy this and you think it sounds like crap... Try and import some patches or build your own. You might be surprised.

I have kept my unit and I'm happy with the sounds now when I started removing almost all the default patches. It as a lot of potential but you need to be willing to invest some time into building patches or finding other ppls patches to import. Also custom IR's make quite a big difference so I recommend trying those too.

This is an amazing effects unit!
I have used and played with several effects units but none had the sound quality this NUX MG-30 delivers. I didn't even need the manual to get around with this unit. It's that simple.

The amp modeling is next level. You can choose from 25 different amps which is less than most other units but the quality is spot on. The definition and dynamics of your playing are so well presented.
I used a clean deluxe amp combined with the T Screamer style overdrive and could get such a warm creamy sound out of it. Also the Morning drive impressed me and the AC30 amp gets so close to the real thing too.
It even has 3 bass amps and 2 accoustic amps. I didn't try those so I don't know how good these are.
The reverbs and delays have a realistic sound and the chorus did very well too. The Shimmer reverb sounds so beautiful.

The problem with multi effects for gigging I faced in the past is that it's difficult to switch sounds in the middle of the song as you need to go patches up and down which is complicated. But NUX added an extra foot switch. So I dialed in a clean sound with reverb and a compressor as my base patch sound. During the song I could engage and disengage 3 other effects like overdrive, echo or phazer. (2 on the external foot switch and 1 on the pedal board) This makes this unit so versatile.
There is also a very clear tuner integrated which lights up so even on a dark stage you can easily tune your guitar. This seems such a small thing but it makes a huge difference when playing live.

For practicing there is also a looper of 60 seconds and a drum machine. A lot of multi effects have this these days but almost non of them let you access the drums and looper in 1 screen. I could activate the drums with 1 foot switch and loop with the other. It looks so easy and this makes this unit even more complete. Also if you are doing gigs alone or with just another person and you want to spice up your songs with rhythm and layer some loops and bass lines.
After 1 week using it I am so excited bout this unit already and still I feel like I only scratched the surface of what this thing can do.

I never thought I would say this but this unit will probably replace my amp and effects.

This is one of the easiest pedalboards to use, without reading the manual I felt comfortable in about 15 minutes!

The interface is spectacular! On the pc there's nothing you can compare with, and on the device buttons are spot on to navigate through and adjust - graphics on the big screen are amazing and bright to see in any light conditions.

Having had Boss, Line6, Zoom, this is by a big difference one of the easiest to deal with and one of the best I've owned.

There's a lot of settings to go through, so my advise is to start from scratch:
Delete one preset you don't like and start making your own. You'll soon change them all...

The only downfall I noticed was the somewhat "digital" sound. But this is me, after 30 minutes and with a crappy combo (to be sent to garbedge soon). But definitely have to go through settings, as I really like lows and clean notes. But rest assure it stands for any kind of music (classic, jazz, rock, heavy, you name it!)

There's also presets and some IRs that you can download from the internet and they're growing.

Conclusion: Get it if you can!!!

It is a really good product with a lots of potential, however... QuickTone software and connecting to PC are very unreliable and cause the unit to hang and generate strange noises, and MG must be rebooted almost each time. To make it working with PC wasn´t straighforward also as promised. The driver(s) from Nux seem to be ureliable too and have problems with compatibility with other products it looks like.
Lack of touch screen is definitely a minus. The drum machine lacks metronome option. The drum machine can't be fully controlled outside the looper. When the looper is used together with rhythm and the looper is stopped, then the rhythm stops too.
The chassis and overall built quality seems to be quite good though. Nux could make the unit's chassis slightly bigger though and add two more footswitches instad of adding them as a separate controller, I think.
Interface is very nice and quite easy, though it takes a moment to remember all the tricks how to use it as each button/knob can be used for multiple options. Also working with the effect chain directly on the unit is not very intuitive in the fist moment, but it does not take long to learn it.
Expression pedal is set by default as volume pedal which is always on, I don't know why.
If Nux will fix and improve the QuickTone app and connectivity with PC, plus add metronome and correct, improve the firmware it might be actually a really great, small, portable effect.
Overall, good value for money.

Home use and in band. I use it with a 1x12 cab + a pre-tube head.
I've got the MG300 as well, but wanted something more flexible.
I play music 30+ years and owned dozens of guitars, amps, effects.
Even owned other chinese multies like: Ampero, or GE200 etc...
This one is far the best among them. I liked the MG300 as well, but that was good just for home practice/record.
The better IRs, the bigger screen, the felxible chain, the more buttons may raise someone's interest and I can tell you it worths every penny.
As for sound the strongest points are the well detailed and dynamic crunch and those satisfying high gains.
Its fun to check the load of the two processors at each patch.
I miss a good detune effect.
Probably the next generation will work with dual chains and may have two expression pdls out or may have more buttons.

Just a great device! I'm not a professional. I play a little at home. Before purchasing this device, I played on plug-ins for the computer. After the purchase, I am terribly pleased. There is now no binding to the computer, the device is self-sufficient without it. The sound is very good. The delay is almost imperceptible. The only thing that had to be done right away was to reduce the gain level in the preequalization section. Otherwise, distortions are heard. Maybe I'm being picky))). But overall, it's just a great thing. No plug-ins can compare with this device. Most importantly, now there is no torment on the pairing of drivers and software on the computer. Maybe of course plugins from the top category will sound no worse, and maybe even better, but convenience is more important to me. Now I can safely sit down on my favorite sofa, connect the smart phone's soundtrack and trinkle to my heart's content. NUX, you are just monsters! Thanks! THOMANN as always, well done! Everything is clear, fast, on top! Thank you.