dpkg,
Hey, So I finally had the time to check on this. I used 3 different tune finders and my ear. Granted, this will depend on your own speaker set up for your computer, but on mine the 2 digitals showed about 2-5 c flat, but that is still well within the note bandwidth, my pitch pipe was pretty on the money too. I say this, but I’m still working on my own ear- and I tune my violin with my digital tuner, so I can’t actually say more than that.
I know this isn’t much help, but if Jason is recording drones by hand and then looping them (and with the fluctuations in the Drone I imagine he is) you won’t get a perfect drone no matter what- too many variables, but I’m just a spectator. I would take the drones lightly- use them at a low volume for a background while you play.
Regards,
Max