#vacuumtubes #preamp #audio #hifi
I designed a better schematic and PCB board than the one that i purchase from Aliexpress
If you like my videos and my channel and you would like to support my work and projects any small donation to my Liberapay account would be appreciated!
Here is the link to my Liberapay account https://liberapay.com/SymbolTech/
Any small donation also through my Patreon page will be much appreciated and used to make more videos
Here is the link to may Patreon account https://www.patreon.com/SymbolTech