I have trieds to build the U87, but just got loud hum. I am starting fresh with a new pcb from vintage mics. I wonder how people solder the smallest lanes and if there is a "high" risk for shorting the circuit, possible sending signal to ground? I have bought a thinner solder and thinner solder iron, hoping to progress better. Should some solder points be soldered from the upper side f x?
Just finished the C12 build and it works like a charm.
Just finished the C12 build and it works like a charm.