DIY ring core SPDIF transformer
In my Cirrus Logic CS8416 SPDIF to I2S board design , I want to include a SPDIF transformer to avoid ground loop problem . Although there're a lot of others…
DIY R2R DAC
Discrete R2R DAC (part 1)
I wanted to design a R2R DAC long time ago. I'm aiming for simple discrete design with 74 series logic ICs. After a long planning, I finally built 2 versions…
vintage Toho Full range speaker
TOHO vintage 10″ full range speaker
I found a pair of 10" vintage full range speakers last year, in my friend's garage. the pair of speakers looks like early Japan made and I can't find any…
DIY 2A3 in red color
2A3 SE Amplifier
I received a request from a friend who want a 2A3 SE amplifier. Here's the 2A3 I build for him. I used 6E6P as driver stage. The 6E6P are long…
Raspberry pi Spdif card
Raspberry Pi Music Player with SPDIF out
I build a Raspberry Pi Player for my system. Parts I ordered and received as below: Raspberry Pi Zero, 1 to 2 USB hub, TERADAK WM8805 I2S to SPDIF board,…
DIY Amp Camp Amp
DIY ACA class A amplifier with linear power supply.
I built this ACA "Amp Camp Amp" designed by Nelson Pass, just wish to try out the characteristic of this amplifier design. DIY Amp Camp Amp ACA PCB By looking…
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