Ever wanted your GSSL to have a regular VU meter, so you can monitor the inputs and outputs? 
Great idea, but it the GSSL can't typically support a VU meter directly to show gain reduction. This mod board allows you to show the control level that'd usually go to the small meter out to a larger meter than can be used as a VU meter as well. 

An User manual will be available for download 

A short video showing this board (and the noise reducing CRC board) is available here

A Mouser bill of materials is available here

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