Got the feeling from your posts you’d like the retro 8-bit synth engine and its sequencing interface. Also, you seem to like hooking loads of small stuff up together. Perhaps I’m wrong.
I ended up making a passive mixer with a circuit I found online and materials from a local electronics shop. I already knew a bit about electronics but learned a ton. I’d love to do an active mixer at some point too.
Hey @AudioJack you mention the TB-03 .The TB3 is lovely compared .the extra presets sound really nice and the seq has some nice randomiser variations. The decay knob is replaced by a screen (?) but it is cheaper and has loads of other things going on.