This is the Maestro Ring Modulator from the beginning of the 70's. It is in top playing condition and the visible holes in the back chassis stems from it placement in my old pedalboard. Also the middle button is a replacement, but again all these things is only superficial stuff and does affect its playability... these things would only concern real collectors.

The sound of this device is very special and if you can handle it, a real statement in its own right.

I've seen immaculate looking specimens go for up to 1500 € as it is a rare item, but I'm willing to sell it for 985 €.