> binning operations after production are all that separate precision resistors from cheap resistors Absolutely, no. Cheap resistors not only have low precisi

> binning operations after production are all that separate precision resistors from cheap resistors Absolutely, no. Cheap resistors not only have low precision of marking. They also suffered from many other issues. Examples of cheap resistors issues: they have large temperature coefficient; they change resistance permanently on overheat and when under high voltage; they aged fast and this mean, their resistance permanently change; they usually have large parasite inductance and also they usually have coil structure, and under high voltage happen leak between turns. High voltage, in this case, mean just about 100Volts.