<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by Haigbabe: Some of the current thinking from manufacturers and practitioners goes along the lines of... burning at a speed which your media and burner handles efficiently. This may be (for example) at x6 or x10.<HR></BLOCKQUOTE> I agree, but I once made a test with a master I burned in my studio, and sent to a high end mastering facility: they ran a benchmark test on it and discovered the error rate comparing it to the master they burned from the same .wav files I sent along. The error rate in my 2X master was acceptable, but higher than their 1X, so I guess that speeding up involves a higher error rate: I also think these are differences that you can't hear in a listening test, they will only affect the capability of the CD to be played in all players without reading errors, and it's a matter of staying the closest to the original source: a tiny loss in one point (be it A/D or D/A conversion, or whatever point in the process)is no big deal, but if you start to sum 1+1+1+1+... tiny losses then it does make difference. Also at the Mastering plant they recommnded to use good quality burners and medium, and to avoid any kind of vibrations of the CDRW during the burning session (when I do a master I press OK and leave the room, call me superstitious...). Cheers L.G. 