Hey there, this is an old, not sure if anyone will read that.
Just picked up a second hand small stone from the 80’s

As soon as I unplug the input, so the guitar. The small stone acts like an oscillator with the rate knob acting as a LFO modulating the pitch.
This is so cool! The phase works perfectly fine and if I unplug the guitar I have a extra instrument.

Have to mention. There’s no cover for the batter and thing to clip on the battery is not there.

How cool is that. Got a perfect phaser plus a weird synth.