Very Accurate and precise!!
I purchased this a few years back, and it definitely changed the way I listen to music! I think the only drawback with this technology is the fact that it is an actual plugin that has to be attached to a master bus in order to work correctly. I think this thing would be an even better application if the measurements that you took were "blanketed" throughout the entire operating system. Meaning, if you're on Youtube, you can also hear the impact of the measurements. This would allow the user to be immersed in the corrected sound signature. Also the instructions for this thing are not as clear as one would hope, and phone support from IK is totally non-existent (Message boards are great though)
Lastly,Even though this system will attempt to correct the errors in your room, i've found that placing acoustics at the 1st points of reflection, as well as installing bass traps greatly increases the accuracy of this unit, and also allows the A/B effect not to be as drastic when you turn the plugin off prior to mix down. Let's be perfectly clear....Investing in this system will give ANYONE an edge over the competition!