I used this pedal on an electric guitar, and some synths: MicroFreak, Mother32, and even on virtual sounds like FL Studio Sytrus. It sounds very good with any input source.
What I especially like about it is that the reverb follows the melody or chord, even when they are changing in time. (Unlike other reverbs that mush together chords when they change)
I would recommend any Strymon device at any time. The hardware is solid, the knobs feel nice.