I don´t know if this is has something to do with with Logic, or if this is related to my recording(but, which is more likely). This shows the wave form for one of the drum overheads: http://web.me.com/henning.skogh/Waves/Waves.html Does anyone have an ide what causes this kind of wave form. It does look clipped (but it is not as I understand) at the bottom and long tiny transients at the top. I have not used any compression when recording, but the preamp has the possibility to change impedance. Art preamp --> Presonus Firepod --> Logic Pro. All the best, Mastergod.