Had this just over a year and was very impressed with it for the money it cost me.
This is the original for sale advert from last year although photo's have expired but I have added my own recent photo's.
https://theartofsound.net/forum/show...Passive-Preamp
Looking for £100 posted or collected from London NW3. Happy to demo if collected.
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Added internal shot thanks to Alan's excellent suggestion.
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Looks like an Alps Blue potentiometer and Selden switch.