MP3 Quality Modifier: Easily adjust MP3 quality & file size

MP3_logoMP3 Quality Modifier is a useful no-nonsense tool suitable for all music lovers, regardless of levels of computer proficiency. What’s more, it’s free and portable!

“MP3 Quality Modifier is a straightforward program that is able to easily change the quality of your MP3′s in order to save disk space and/or to fit more music on your MP3 player while maintaining the desired level of audio quality and keeping all ID3 tags intact!”

MP3 Quality Modifier can be utilized to downsample and upsample tracks, convert bit rate and sample frequency, convert stereo files to mono and vice versa, or standardize bit rate and sample frequency across an entire collection. Of course, upsampling to improve quality is not going to be anywhere near as successful as downsampling to reduce file size, you can’t make a silk purse out of a sow’s ear. However, MP3 Quality Modifier will do its best to make the most of what’s already there.

MP3 Quality Modifier – download & usage

Download is a 729KB zip folder extracting to 945KB. It consists of a single executable which scans 100% clean through Virus total. Simply double click the extracted executable to run. You can download MP3 Quality Modifier direct from the developer here:

At first run you’ll be presented with a brief but helpful startup guide…

MP3 quality - get started

… click OK and we move on to MP3 Quality Modifier’s main interface

MP3 quality - main interface

As you can see from the screenshot; the program’s clean, efficient layout and intuitive controls make MP3 Quality Modifier very easy to comprehend and use. Options, such as bitrate and sample frequency, can be set manually from the associated drop down menus, or simply select one of the pre-defined profiles from the ‘Presets’ menu:

MP3 quality - presets

All primary settings, those which will be used most often by most users, are available right there in the interface. However, MP3 Quality Modifier’s ‘Settings’ menu presents additional Window, Loading, and Language options, plus an “Additional Options” menu where users can choose to adopt existing elements, set minimum and maximum bit rates, plus set processing priority and accuracy.

MP3 quality - settings 1      MP3 quality - settings

MP3 Quality Modifier – in action

For the purpose of testing I elected to downsample an MP3 which had been previously saved at a high bitrate, resulting in a comparatively large file size:

MP3 quality - working

As you can see; the original bitrate is 320kbps resulting in a 12.76MB file. We’re going to resample at MP3 Quality Modifier’s default bitrate of 130kbps. We can choose whether to save the output as a new file in a user designated folder or replace the existing file.

MP3 Quality Modifier reduced the MP3 file size from 12.76MB down to 5.02MB in just 17 seconds.

MP3 quality - results

What about the quality? There is always a trade off in these cases, a certain loss of quality in exchange for reduced file size is only to be expected. However, comparing the before and after tracks, to the ear (well my ears anyway), there is no discernible loss of quality at all.

MP3 Quality Modifier – the conclusion

MP3 Quality Modifier ticks all the right boxes for me; it is small, free, and portable, with a simple, no-nonsense yet entirely effective approach. Over the years I’ve saved MP3 tracks at all various bitrates, I’ll be utilizing this terrific little tool to normalize my collection.

One minor complaint; the user selected output folder does not stick. Each time the program is run, or a different preset is selected, the output folder reverts to default. However, it is a very minor thing which does not affect the software’s usefulness or efficacy in any way.


About the Author

Jim Hillier

Jim is the resident freeware aficionado at DCT. A computer veteran with 30+ years experience who first started writing about computers and tech back in the days when freeware was actually free. His first computer was a TRS-80 in the 1980s, he progressed through the Commodore series of computers before moving to PCs in the 1990s. Now retired (aka an old geezer), Jim retains his passion for all things tech and still enjoys building and repairing computers for a select clientele... as well as writing for DCT, of course.

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