Good evening, and welcome to the FxSound forum.
@Thelucifer1978 is right in pointing out that the [EDIT] Default Preset was introduced for the particular purpose of providing users with a blank slate from which to start in creating their own custom Presets.
It is also worth noting that since v1.1.22.0, users can add up to 100 additional Presets to their UI menu. You can find a link to the instructions on how to set this up here.
Starting from Folk Rock, I would recommend reducing the Bass Boost, Dynamic Boost and Ambience Effects, since these are the most likely causes of the distortions.
The Bass Boost Effect works at 62,5 Hz, which I discovered by opening a Preset .fac file in WordPad. Instead of maxing it out, try a small raise in the two Equalizer bands to the left at 86 Hz and 158 Hz, to get a more broadly spread increase of the lower frequencies.
Raising the volume is a simple A-to-B equation, while the Dynamic Boost Effect also makes the parts of the audio stream which are relatively quiet, actively louder, and hence, adds more detail. But applying the Dynamic Boost Effect requires a more complex processing method than a mere increase in volume, and, especially at higher levels, and/or when combined with the addition of other audio effects, can therefore end up adding certain forms of unintended distortion to your audio. So if you can replace some of FxSound’s Dynamic Boost with a simple volume boost done on your system, your media player, and/or your headphones, that would also seem likely to contribute in reducing distortions.
FxSound’s Ambience Effect purposefully adds a form of echo known as reverb, a.k.a. reverberation, to your audio output, and has been similarly reported to cause certain distortions at higher levels, especially on headphones.
If you want more clarity, then you could push the Clarity Effect up a few notches to level 6 or 7, or alternatively raise the three Equalizer bands to the right that control the high frequencies up to 16 kHz.
I’ve included a model Preset for you to try below. You’ll need to change the file extension back to .fac by removing the last four signs (.txt), then follow the instructions on importing Presets to add it to your menu. You can also further tweak these settings to your own liking, of course.
GA_art.fac.txt (962 Bytes)