Sony s7700 mods by Empirical Audio.

Yes, I have driven a modified BC DAC2 with the modded Sony 7700. The Sony sounds good with any DAC. The modded DAC2 is certainly better than a stock DAC2, but not my cup of tea. I prefer the Benchmark and the Perpetual P-3A to it. The Sony with a duplicated CD inside is really very low jitter, almost as low as computer-driven. Stock CD's have a lot of jitter in them, so I recommend duping them to CD-R.

Interesting, Steve. Copied at what speed? The lowest or doesn't matter?

"Stock CD's have a lot of jitter in them, so I recommend duping them to CD-R."

Interesting Steve. Has there been some tests done that verify this? Is there something about the commercial pressings that create read errors?
I use EAC @ 16X for copying. I think you referenced that program in your paper.
Do you suggest a slower speed?