Condenser Cartridge & tom arm phonostage modify

 

Condenser Cartridge feed in audio signal carry DC bias

record...

https://kao211.blogspot.com/2018/09/pauls-weathers-fm-cartridge.html

https://kao211.blogspot.com/2018/09/toshiba-c-404s-condenser-cartridge-and.html

https://kao211.blogspot.com/2019/01/stax-cp-y-condenser-cartridge.html

DIY Plasma tweeter modify

 

plasma mid

Diy low noise tube pre-amplifier 6B-R22 ~modify