NAD 1000s pre: looking for schematics

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I purchased a NAD 1000s pre-amp and want to give it some "service" and mods. By looking under the hood I could only identify the reservoir caps. Apart from one opamp (for the tone control?) it's fully discrete.

So, to have a schematic would help. Does someone have a .pdf?
I know I could buy the service manual but that's only half the fun.

Thx
joe
 
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This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.