Replacement Keio IC TS200011

Replacement IC for the custom Korg IC Keio TS200011 used in the VCO core of the early Korg synthesizers: 700, 700S

The replacement IC is made with fidelity using selected parts. Every module is full tested in a Korg 700 to ensure the correct work. The installation is fast and easy due it's a direct replace for the old IC, only you need to remove the old IC, put the new and solder it. No pin modification or additional works on PCB  is needed.
Is possible that some minor adjust must be done using the internal presets on the PCB's like if someone change for a genuine Keio IC. This is due the 100% analog nature of the module and the synth itself.