Hendrik Just had to say that your précis of bit-depth, sample-rate and dither principles was one of the most concise, helpful and clear (not to mention accurate - amazing how many people will happily spout nonsense on these subjects!) accounts I have ever read. Thank God there are some people around who are still prepared to take the time to explain these things, and do it in a clear and meaningful fashion using everyday terminology. Thank you!! I do have one question for you though, which is always an issue for me with DAW's. If you're bussing out to a mixer instead of mixing in the box (in my case 48 channels of 24bit audio out to external boxes and a Mackie D8B), does Logic automatically dither down from it's internal mixer's bit depth (32 bit float in this case) to 24 bit fixed, or does one manually need to add dither to all those output busses? I'm always concerned that hosts do not dither by default, meaning that these signals are being truncated. As far as I understand, whenever bit depth changes, dither should be used. Indeed I've had this confirmed by a couple of very knowledgeable sources, even when converting from 32bit float to 24bit fixed. When I used Cubase SX and Nuendo, I had to use busses routed to individual outputs with Waves L2 limiters across every bus dithering down to 24 bits, to ensure that all my bus outs were being looked after properly. This is because (as I understand it) the bus outs in Nuendo do not automatically apply dithering when dropping from 32bit float to the output bit depth. Should I be doing the same with Logic, or does Logic use a fully dithered mixer, including all the individual outs? Thanks for any feedback. Jules