For checking exactly what the SONY DW-Q30A, we used three different media, burned with other recorders. The three media have been measured using the well known AudioDev SA300 DVD CATS system at 1X.

The drive is capable of reporting PI/PIF errors, so we will compare those measurements at 4X reading speed.

Please note that the posted results are only valid for the specific tested SONY DW-Q30A drive. Using other drives, even another SONY DW-Q30A, can produce totally different results. Be aware!

#3rd Test Disc - PISum8/PIF Comparison - 4X Reading speed

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No similarity between the two graphs produced by the SA300 and the SONY DW-Q30A.