Hello! I'm new to all this, never had a headphone amp before and my entire diy career involved just one mechanical keyboard and a hifiberry dac. Put this thing together and absolutely loved the process and the sound! I'm having some problems with pops. I suspect it's the headphone jack as the pops only occur when I move or wiggle the jack.
With the black wire that runs through both bottom lugs and snakes around the top 2 lugs away from the 9 pin socket, I only soldered the bottom lug away from the socket and left the remaining 3 lugs unsoldered (per the manual, I think). Can I check if this is correct? Should I be soldering any of the remaining lugs? Thanks!