Now that we've experienced the world of Hi-res audio on a regular basis, there's no going back. And if you were forced to surround yourself with the low-quality version of your favourite song via MP3, there's a good chance it could take its toll on your emotional health.

That's right, according to a new study by the Audio Engineering Library, MP3s weaken positive emotional characteristics (like happy, heroic and romantic) and strengthen negative ones (like shy, scary and sad.) It's all there in their The Effects of Mp3 Compression on Perceived Emotional Characteristics in Musical Instruments test that analyzed both compressed and uncompressed music over 10 emotional categories.

So get some good headphones for Christmas to get you through the winter blues.