... displaying my ignorance with this but here goes: I was mucking about with the compressor that comes bundled with Logic 9.1.2. Some strange (to my eyes anyway) results. I have a vocal which, with no compression - peaks at zero three times. I apply these settings: Attack 5.0ms Release 170ms Threshold -20dB Ratio 5:1 Gain 0dB Now the zero peaks reach -2.3dB, -1.5 and -1.0dB Change ratio to 3.1:1 (for some reason the compressor's threshold jumps from 2.9:1 to 3.1:1) and the zero peaks reach -2.1dB, -1.5 and -0.9dB 2:1 and the zero peaks reach -1.7dB, -1.2 and -0.8dB 10:1 and the zero peaks reach -1.7dB, -1.5 and -1.0dB Even at 30:1 I get -2.6dB, -1.5 and -1.0dB. These results don't make a whole lot of sense to me. Are these the results that should be expected with these settings? Cheers, Robert.