A pretty rare vintage J&J phaser for some service
The box is in good condition and has the original packaging.
Bottom side of the circuit board.
And the component side.
The circuit contains six NEC741 opamps, a transistor emitter follower on the output stage, and four stages of phase shifting with 2SK68 j-fets.
The old tantalum capacitors got replaced with film and electrolyts, also added som filtering on the output stage to get the noice level down.