Since solder is such a poor conductor, why use it?

Why don't you make a preamp asap.

09-25-15: Tbg
Timrhu, yes solder is awful now. It cracks.

I don't doubt your word if you have experienced that, but it needn't be so. Consider the hundreds of thousands and in many cases millions of solder joints in the avionics systems of military aircraft, which are accomplished mostly by automated soldering processes. Those seem to do ok, despite being exposed to extremes of vibration, temperature, and other environmental factors.

Regards,
-- Al

Less talk, more action. Just do it! Prove the world wrong. Make it so! make it magnetic too while at it. The world will be a better place.

PS, BTW if you make it magnetic, please also make it affordable as well for poor shlubs like me. No 4000X markups like some prescription drugs. Make the world a better place!!!!!

Working with silver solder is nearly impossible. As previous posters mentioned, you connect conducting surfaces and than apply solder that wraps connection TIGHT. With silver rich solder you either have to apply excessive temperatures or your solder won't be able to wrap the connection. Silver solder is only used for marketing. You can also use screw-in wire guards, but those you will have to inspect for corrosion and clean once in a while.
What else can be sacrificed for the good sound? Maybe welding bubbles you can possible face during assembly? Short answer is stick to old school-good school.