stuff Yes, POW-R algorithms seeem to be pretty popular and many engineers will select a particular POW-R type to suit the source material. For me (and my crap ears) the difference in dither types is hard to hear and it was only when I had the chance to use decent monitoring systems (Dunlavy /B&W/ Levinson) that I (think) I heard a difference. Yep, dither beats truncation. I'm not a Pro Tools user so I this information is secondhand but I think that if there is a chain of plugins, data is maintained as float and then converted to the final form (16, 24 or whatever) at the end of the chain. I think that the same goes for most of the Windows DAWs. Somebody correct me if I'm wrong though. So, there should be no need for dither apart from the final word length reduction from 24 to 16 bit. Also, remember that dither is cumulative and so the noise floor can rise. Now, question about LADSPA and DAWs. Is it standard practice to dither from float (or fixed) to integer post-processing? Also, do any (or all) of the Linux DAWs act as described above i.e. maintaining a float datatype if there is >1 plugin in a chain? I suppose that this would require a standard "internal" format of some sort. Greg I'm also new to Linux audio (although not to Linux) so perhaps ___________________________________________________________ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself http://uk.messenger.yahoo.com