4K YouTube to MP3 has the main function of downloading audio tracks from the Internet. The tool supports virtually all the most widely used media-sharing sites, like YouTube, Vimeo, SoundCloud, Vevo, DailyMotion, and Facebook. Moreover, it does not matter if the original source is a video, as the program can still get its soundtrack.
The program is very easy to use. Good news is that it supports processing various download jobs simultaneously. For this purpose, the tool lets you create a list, which you can populate by copying and pasting links one by one from a web browser. Likewise, it allows importing a complete list of links in text form. Regrettably, it cannot monitor the clipboard for valid URLs or install a browser extension as many other products can.
For every link, the program can check available formats and qualities. In this respect, you can choose the keep the original track or change it to high, medium or low quality. Similarly, it supports downloading in three audio formats (MP3, M4A, and OGG).
The tool can be configured according to your preferences and specific bandwidth conditions. For example, you can decide how many download threads are processed simultaneously or set speed limits. This allows you to reduce the negative impact of the program on the overall browsing speed. Last, it lets you connect to a proxy server, by setting name and credentials.
All in all, 4K YouTube to MP3 is certainly not one of the most versatile and advanced tools of its type. If we compare it with other products out there, it is easy to find that it is restricted to audio downloading while others support video as well. It is also too bad that it does not allow searching for media or converting the downloaded files to other formats. On the other hand, it has the advantage of being very easy to use and supporting fast transfers.