Yes it was passive also , I’ve not got too much experience with fretless - but can say it was the easiest and best one to play out of the few fretless basses I had 👍
I’ve got 4 Leduc basses and can say I’ve got zero gas at the moment ( well always interested in Leduc instruments ! )
I also play some acoustic guitar 🤫, and would love a C2 - let’s see if & when Christophe builds again!