I purchase a rme fireface 800 I use it in a pc environment (2.8 cpu, 2gig memory) So far my experience has been a disaster After 3 days of trying everything, reading all tech info on rme site, doing the machine upgrade on the machine, doing upgrade on my lacie drive for firewire 800, and when all else failed, changing my drive interface from firewire to a usb-2, (to mention just a few things tried - there is 3 days of lost time on this machine)... The fireface 800 won't let me listen to a simple song using windows media player without clicks and pop whenever I close application, read something on a drive and even simply move my mouse over icons ! This is despite the fact that: 1- NOTHING ELSE IS PLAYING 2- NO AUDIO IS CONNECTED TO FIREFACE (the mp3 audio from windows mediaplayer arrive via a firewire 400 interface) 3- EVEN THOUGH THE LATENCY BUFFER IS AT THE BIGGEST SIZE POSSIBLE. So forget about using fireface with 8 input, etc... You can't use it at all in a windows environment. That is what I have to conclude from reading rme info which says that if an error count appears (on the interface window) that means it is not a problem with rme but of the computer and they suggest to change the computer! (which is less than 1 year old and has a basic simple on-board sound module with which I have listened to thousands of songs without any clicks or pops whatsoever...) Rme offers an email address for tech support, but they never replied back. There are no phone number for support. If you use windows, don't buy it until they fix it or provide sufficient information to let a mensa member with over 20 years of computer programming experience be able to use it.