Will work fine generally speaking. The impedance is specified for high frequencies around 1MHz to 6+ GHz, depending on what type of HF cable it is. At audio range and at these cable lengths this is of no concern. This is just so they have a flat reactance, it's many other factors than series...

Here you can read the dimensions for all the different cable plugs and pcb-mounts. http://www.deltarf.com/pdf/DeltaMMCX.pdf   Each manufacturer might have some minor difference in size though, but since it's a closely specified standard there shouldn't be any problematic deviation even if...

First post, hope you're still looking for a solution now that I took the time registering. I have been investigating this myself quite alot just recently and thought I'd share what I've come to think is the best connector for this. Check out the MMCX connector in this picture. It's a really...