I've been using the pedal for a few weeks now and I have been really happy with it as I find the doubling and stereo width convincing and pleasant.
What I really like:
- Good tracking and stable doubling (the sound doesn't jump in the stereo space).
- Can give a very wide stereo effect and the time knob is effective for tightening or loosening the effect without having to go to the extreme.
- The build quality appears to be good.
- Rather transparent and respectful of the tone.
What I like less:
- No USB. If KMA were to refine their algorithm, the pedal couldn't be updated.
- The artwork: KMA has many pedals with very nice artwork but the Geminus looks a bit more "plain" to my eyes. Something like the Endgame would have been so nice!
- The tiny knobs: I'm not very fond of mini knobs and would have preferred standard size ones which I find easier to manipulate.
In conclusion, I think that the Geminus is one of the best doubler currently available.