For checking exactly what the NEC ND-4551A, 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 NEC ND-4551A drive. Using other drives, even another NEC ND-4551A, can produce totally different results. Be aware!

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

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The error trend lines are quite similar for the NEC and the SA300 for both PI and PIF. Actual 4X reading speed...