did you get the iron lung or the full on v256 (or whatever it’s called). Assuming the V256, are you sending in a synth signal, or using the built in synth controlled via midi?
I bought a used Analog Labs X32 Vocoder a while back and it is all that I was hoping for and then some! Very few were made, but it is an EMS clone.
It is a 2U rack unit and has 32 bands that can be used in stereo (every other band going left and right). It has a built in VCO and LFO for modulation as well as the normal inputs for carrier and excitation.