Exclusive: Sony DRU-700A Dual Layer Recorder

Error Tests

Although the write speeds are important, equally important is the drive's ability to write cleanly. We used one DVD+R (MCC 003) and one DVD-R (MCC 02GR20) for each burn test. Unfortunately, we had the issue of our standard MCC 003 media burning at 4X; we typically burn at the maximum speed for this test.

We used KProbe 2.1.0 with a Lite-On LWD-851S drive for our tests.

Sony DRU-700A MKM 001

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Update: We got an email from Karr Wang (designer of Kprobe2) claiming the tests we see from the PI/PO detection are 100% correct. Remember how DL technology works (see the primer if you need a refresh): the L1 layer sits behind the L0 layer. Thus, any errors on L0 are essentially amplified as we read the L1 layer. This disc read correctly in our Apex AD 2500, as well as every PC DVD reader in the lab.

Sony DRU-700A MCC 003

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Our MCC 003 burn went extremely well; although, it is hard to contest the validity of this burn, since we could only burn this media at 4X. We included it for reference anyway.

Sony DRU-700A MCC 02RG20

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The DRU-700A had some issues burning this disc cleaning, but consider the similar pattern we saw with the Gigabyte GO-W0808A last week in our roundup.