I have the DFA Adjust+ kit. I don't think it is stocked at dealers, so I got it direct from DFA in Germany. 230 Euro plus 60 Euro shipping (I think FedEx- very quick). Consists of 12" Adjust+ test disc, dongle, instructions, and excellent bubble level with degrees. Windows only, so I bought an HP $290 Windows tablet, because I didn't want to try use an OS simulator in my MacBook.
I'm not an engineer. That said, I am very impressed with Adjust+ kit. I used it to adjust azimuth on my DFA Blackbird turntable/Reed 2A tonearm/Lyra Scala cartridge rig. I did not take the time to understand the concepts of the operation, but I did use its recommendation of about 0.33 degrees counter clockwise headshell rotation. I also verified channel balance with my Rigol DSOL. In these cases, the source for the waveforms is the output of your MC phono stage/pre-preamp that is receiving the signal from your turntable. Here is a DropBox link to azimuth graphs generated by Adjust+:
https://www.dropbox.com/home?preview=AP_AzimuthAdjustmentReport+3+chart.pdf
I'm not an engineer. That said, I am very impressed with Adjust+ kit. I used it to adjust azimuth on my DFA Blackbird turntable/Reed 2A tonearm/Lyra Scala cartridge rig. I did not take the time to understand the concepts of the operation, but I did use its recommendation of about 0.33 degrees counter clockwise headshell rotation. I also verified channel balance with my Rigol DSOL. In these cases, the source for the waveforms is the output of your MC phono stage/pre-preamp that is receiving the signal from your turntable. Here is a DropBox link to azimuth graphs generated by Adjust+:
https://www.dropbox.com/home?preview=AP_AzimuthAdjustmentReport+3+chart.pdf