First patch after tweaking the output level of my two benjolin’s

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First patch after tweaking the output level of my two benjolin’s. I actually built them quite a while ago but have had a lot of other projects on the go and have only just got around to sorting them.
Rob Hordijk’s original design was as a standalone units with a line level output. The fix was really simple, I just changed the gain of the op-amp feeding the filter. One little resistor and it only took me 6 months to get round to it!!!