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Hello, I'm new to this forum, but not completly new to the px-5s, which I bought in may this year. So I'm using it for 5 month. I use it as replacement for a piano, so nearly all my use is Grand Piano. Just from the begin I have the problem, that the output is not loud enough. It takes some time to realize, that setting - Master setting compression level to 100 would change the situation, but I found it. Ouput level is set to 127. For use with my Shure SRH440 Headphone ( 44 ohms ) this works well. For use with my Kurzweil KS40 Speakers ( 20k ohms input impedance ) this works not quite well. They are still not loud enough. To check weather it is a issue of the px-5s or the speakers, I recorded a wave file to USB, checked it on my notebook and detected, that it was recorded with a extreme low volume level. So I normalized the WAV and replayed it on the PX-5s. Wowh !!! I'd never thought, that the small Boxes have such a sound !!! But whats that ? The PX-5S runs extremly into clipping. Ok. I copied the normalized file to my mp3-player and tested the boxes directly without the px-5s. Sound was good and loud and without any clipping. Now I searched this forum and found the updated File from user Xagerado, which is a real improvement. Piano sound much louder even if the compression level is at 053. At least my questions are: What did he that it works in this way ? Is there a tool where I can compare Stage / Tone settings to see directly what he has optimized ? Is it just a singular setting which I don't found ? Thanks for your help. Bernd