Hello,

TL072 ist _the_ standard chip. All your music gear is using those, as
TL071/72/74 (1, 2 or four OpAmps). There is nothing special about them.
They cost only some cent (Euro and Dollar).

You should replace only the IC10 (the one for VCO4). Please be careful
when unsoldering! Don't rip the traces of the pcb.

Florian

dir_marillion wrote:

> Hi Florian,
>
> I bought 4x TL072CP chips, for a very low price.
> I am not sure what is the CP at the end of the TL072.
>
> *** Please confirm (if you know) that this can be used ***
>
> Do you suggest to replace all the chips in all VCOs or only the onw on VCO4
>
> I will open my Monopoly tomorrow morning and I will let you know (I may be able to grab a couple of photos and post them somewhere, if needed, for future reference).