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 ECS Z87H3-A2X Extreme may have had the same general performance score as the ASUS Z87-Pro, but many of the sub scores were rated better, and some not as high. Overall the the audio performance of the ECS Z87H3-A2X Extreme was great while I spent some time gaming on it. This isn’t real surprising since they are both using the latest RealTek ALC1150 High Definition audio codec.