I loaded about 30 of your presets and tryed them and messed with them some that were old and some of the ones that are new in the latest pack some were already on my unit for the past couple years the sound is good but just a very slight fiz is on a really high freq and I wasn't sure if it was the full range of the studio monitors that did it but when I'm not using the Epsi it does not do it. it does definitely sound better with the Epsi. I just was slightly annoyed by the almost not noticeable fiz