The RightMark Audio Analyzer suite is designed for testing quality of analog and digital paths of any audio devices, be it a sound card, an MP3 player, a consumer CD/DVD player or an acoustic set. The results are obtained by playing and recording test signals passed through the tested audio path by means of frequency analysis algorithms. The latest version of RightMark Audio Analyzer can be found here.
The MSI 990FXA-GD80 sounded great while I was playing with it. Though according to Rightmark Audio Analyzer it was rated as “good”, while the ASRock 890FX Deluxe4 has a rating of “Very Good”.