Pleasant sound, with good soft bass, good "middle", a certain alloy of transistor detail and lamp heat. Plus power is connected to the "ground". Design - phono corrector on a GE transistor;. You must have soldering skills and understand electronics!
Full germanium tube amplifying split element pre-headphone amplifier finished machine dual-channel pre-amplification circuit - AliExpress
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Collection of Service Manuals and Schematics for Audio Equipment, PDF, Audio Electronics
germanium Preamp?, Page 11
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DIY EAR 834p phono stage - a short evaluation/ test with those chinese PCBs (page 1) - Phono Stages & Step Ups - Lenco Heaven Turntable Forum
germanium Preamp?, Page 11
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MM Phono stage PCB GE transistors JBL SG-520 clone
