tubes 4 hifi
 "the path of least resistance is through a vacuum"

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Vacuum Tube Audio SP12 - 2019 build

these photos document a recent 2019 build of an SP12 preamp



stuffed PCB

bottom of PCB

RCA jacks on rear panel

ground buss wire added

AC input wiring & power switch wiring

front panel wired except selector switch

selector switch wired

closeup of master volume wiring

finished front panel wiring

finished rear panel wiring

overview of interior

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 tubes 4 hifi
 "the path of least resistance is through a vacuum"