DT 2 and DN 2 are made on Coldfire CPU (same as all previous elektrons from A4 in 2012) but with additional DSP, that handles audio procession, and also it make possible to add and handle more RAM, here is teardown images with this DSP along with CPU
Tonverk looks like fully new platform on ARM processor, embedded linux (all machines previously worked on custom operation system) and coded on Rust and C++ combination, Elektron hiring developers with such skills from 2021 I think
