One good thing about the Kinki EX-M1 is that the unit has the input stage op-amps mounted in sockets, so you can play around with swapping different op amps to change the "voice" of the amp just like a tube amp. You can get some really nice Burson discrete opamps or other such as OPA627 or OPA1612 or OPA1611 on dual adapter.
Just make sure to identify single-channel op amps and dual-channel op amps.
It looks like the 2021 Kinki models have the op amps placed very tightly together. The older Kinki EX-M1 have them spaced out more and you could possibly put in a larger Sonic Imagery or Staccato op amps.