joemeek SC3

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Just curious...
What is the type of the vactrol used in the SC3?
(I have been experimenting with vactrols, but it seems there is a lot of difference in response time.)

[EDIT] Do I see ORP12 there? So a discrete combination of an LDR and a LED instead of a vactrol? [/EDIT]
 
yes I do, I own an old Audio precision System One. 

I think it has a castom build optpocell,  I can see a black box sealed onto PCB board.

M.
 
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