This kit looks to mimic the vibrato found in an old Magnatone Amp, I can't comment how close they got, but what I can tell you is it is a very beautiful pedal!
The wobble is achieved using a LED + LDR combo. It swells from subtle to wobbly, and slow to fast.
This kit is supplied with a JP1590B enclosure. The PCB is laid out for board mounted pots. The PCB hangs securely within the enclosure.
The circuit itself is straight forward. Nothing too tasking here at all.
This kit compares to the Magnor Vibe by Bigfoot.
There is no endorsement or approval from any manufacturer and this information is for comparison only.