Sadly no, as I just sold the O2. But I was using the O2 for a few years before I got the Jot. It was a good pairing with my ZMF Ori which is pretty power hungry. It was great with Fostex/Denon cans too. Note that my O2 had a booster board in it, so it handled higher current.
But over all the Jot is a better amp. The sound just feels cleaner, plus it has the balanced option which is nice for my Oris. And the Jot can handle the most sensitive iems or the most power hungry cans, which makes it very versatile. I'm very happy with it and I don't think I'll be swapping it out any time soon.