Lying on the sofa, it's too cold

 

memories

Office DAC DIY~3 for earphone amplifier...modify RIAA playback profile

 

reduce hum sound on vinyl playback pre-amplifier and vinyle phono stage

 

phono stage

static capacitor filter circuit

Jukeboxssss radar Title upper and bottom metal 3 piece~finish seal up radar top

 

A 8th-Order Lowpass Filters

 

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

 

Diy another rare low noise tube pre-amplifier 6B-R23 ~vs 6B-R22

 

Diy another rare low noise tube pre-amplifier 6B-R23 ~vs 437A

6B-R23

6B-R23

437A

6B-R23

437A

6B-R23

6B-R23

437A

6B-R23

6B-R23

437A

 

Diy another rare low noise tube pre-amplifier 6B-R23～２

 

Jukeboxss H200 modify sound ~record

 

Jukeboxssss radar Title upper and bottom metal 3 piece modify~9 finish light wiring

 

Jukeboxssss radar Title upper and bottom metal 3 piece modify~8 finish album edit

coincidentally Elvis EP in the palette