soldering

Hello everyone! I just soldered a new connector to my headphones' cable and was wondering: is the quality of my... let's say perfectible :D solders influencing the sound? I can't hear a difference, but the answer may be interesting from a technical point of view. Thanks!

My current short IEM cable is a DIY affair incorporating these 2-pin connectors by Eidolic (a new Shenzhen hifi mfg?) to re-terminate a stock cable whose IEM-side connectors failed. Turns out the polymer surrounding the pins (called PEEK) has a really high melting point. Usually soldering...

I am curious what what is on your workbench right now. I am testing a "small" power amplifier module :).