The Hot Tubes side is of course CMOS analogue just like the original. They say so on the Hot Tubes Nano page. The Crayon side is more mysterious and COULD be digital somehow, but from what I’ve been able to find on the interwebs from people who have apparently traced the Crayon circuit is that it is very similar to either the Xotic BB-Preamp, Xotic AC-Booster, or Paul Cochrane Timmy pedals. All of these are analogue. So, my guess is: Analogue.