It's very good! I use it for iptv and for 4K movies in combination with an LG OLED 65''. The sound is very good and it has no problem with iptv (I have used it with both a 50 and a 100 line without any problem). Before, I had the MAG322 and it was driving me crazy with the freezes (I had to do a hard reset every 1-2 hours and especially in movies, I had never seen a movie without it freezing). Now it has never frozen! Very satisfied!

The picture and sound are satisfactory. It has its glitches. The problem I have is that it does not work with the Sony soundbar, resulting in the loss of sound, which can only be heard from the TV speakers.

Stay away from this specific box. It freezes at least twice a day and needs to be restarted. It shows a connection problem even though the speed is 100mbps. It probably can't handle a 100mbps fiber connection.

The only issue it has is that when I try to lower the volume from the remote control, the movie I'm watching continues.

It works perfectly on iptv and is very fast. The only issue it has is that sometimes the frequency of the TV remote gets confused with that of the mag.

4 stars because it doesn't have such good resolution, of course it doesn't bother me much. Otherwise, it doesn't lag, easy navigation, small and discreet

The Infomir TV Box MAG520w3 4K UHD does a great job for IP TV.
I have it connected via 5GHz WiFi and it plays flawlessly and consistently on a low connection (20-30 Mbps).
Nice menu, quick response from the remote, and overall stable.

The problems I am facing are the following:
1. The sound on some channels is too loud, and on others, you have to adjust the TV to 40 to hear anything.
2. Many channels, not all, are lost and then come back. However, the screen turns black for 2 seconds. It might be due to the internet. I don't know.
3. There is no detailed manual with all the instructions, and you have to know how to download it from the website.

Advantages:
1. Very small size
2. Easy remote control
3. WiFi for accessing everywhere

From the best machines currently on the market, with very easy use and very good quality of sound and image.

One of the best machines!
I have been watching iptv for 5 years now from 247greek.tv with older infomir devices without any issues.
This one provides flawless quality without any lag!

He is an excellent receiver. Several receivers have passed through my hands and this one is by far the best. No issues with either cable or WiFi.

Very good machine. I watch IPTV without any problem. The 4K quality in movies and series is excellent using an LG QLED TV.
Preferable to use with Ethernet to avoid speed loss.