I recently heard the XAOC Tallin and found the built-in overdrive very intriguing. I'm guessing that this is the product of the module actually being an amplifier and not just an attenuator like other VCAs.

It still got me thinking if you guys know of other VCAs that, instead of transparently modulating the amplitude, either react uniquely with the incoming CV/audio or modify the output interestingly?

Bonus points for modules with unique features directly linked to the VCA format. What I mean is: I'm expecting a drive + VCA module to be able to produce a similar effect to the Tallin, but I can imagine that there are some funky modules whose combinations are more dependent on the VCA circuit