iSimple JamLink IS7505 lightning dac? or pure i20

Hello. What is the difference between a pure i20 and this iSimple IS7505?

Is the dac just lower grade? Because it looks like it does the same thing except without a additional lightning to 30 pin adapter. But without video.

Anyone using one?

OK. No ones using that.

What are you using to extract a digital preamp signal?