Hi,@Bamboszek Talk is cheap, are you the one writing assembly code and reflowing solder? I already fixed the mask issue thanks to custom 3D printed solder paste stencils made in OpenSCAD.
Three things.
1. Don’t let the naysayers discourage you. I think they mean well but… remember for all the technical talk on this site. This is just a hobby for enjoyment.
2. How was your project going?
3. Does this little portable headphone amplifier with EQ and USB input kinda do what you’re looking to do with this project? Again, I’m not the most technical guy on this forum.
Qudelix-5K Bluetooth DAC & Headphone Amp

Qudelix-5K Bluetooth DAC & Headphone Amp
This is a review and detailed measurements of the Qudelix-5K USB DAC and balanced headphone amplifier with Bluetooth receiver. I purchased this myself but a member kindly donated one third of the cost. The Qudelix 5K costs US $110 on Amazon including shipping. The Qudelix comes in a nice...

@Bamboszek Talk is cheap, are you the one writing assembly code and reflowing solder? I already fixed the mask issue thanks to custom 3D printed solder paste stencils made in OpenSCAD.