Some readers may remember my posts a few weeks back regarding the quality of audio CDs and some problems I had. I have now conducted my own investigation and come to the following conclusions:
Average C1 errors measured with KProbe on a Lite-On DVD burner over a 3-minute period towards the end of an audio CD (where errors are generally highest) appears to be a good objective test of audio CD burn quality. Average C1 should be much less than about 60 for noise to be inaudible on my standalone player using CMC Magnetics media. (Other players and CD brands may or may not have a different threshold.) Average C1 is typically less than about 1 for a Pioneer DVR-110D burner, and less than about 5 for a Lite-On SHW-1835S.
The Pioneer DVR-110D does not work well on the ITE133 card (secondary port only tested), but the Lite-On SHW-1835S does works well, whether connected to the ITE card or the motherboard, although not quite as well as the 110D connected to the motherboard.
While there seems to be some variability with burn speed, the results donâ€™t support the general view that â€œslower is betterâ€. The optimum speed is probably a function of CD manufacturer and burner, but does not seem to give results much better than other speeds.
If anyone wants further details you can either ask them here or I can email you my 4-page Word document on the gory details of my hardware problems and testing methodology. (And how many CDs I sacrificed in the name of science)