Spade vs bare wire

Tinning is probably not the best idea:
 - Solder is soft and malleable, so connections tend to loosen over time and are thus not gas tight.
 - Tinning should be done in a solder pot
 - There are 2 dissimilar junction instead of one
 - Unless you are expert with proper tools and the correct solder, you run the risk of a 'dry' or incompletely wetted flow which are sonically awful.

Bare OFC cable is the simplest and easily the most convenient. Issues with oxidation, if they exist at all, can be dealt with a periodic clean once or twice a year.

Besides, concerns with any oxidation of speaker cable pale into insignificance compared to oxidation of cable used inside amps, speakers, the mains, the power station etc etc.

Paranoia City Arizona.

Maybe, but what about the potassium?

Issues with oxidation, if they exist at all, can be dealt with a periodic clean once or twice a year.

Pray tell, how do you clean multi-strand 12ga 7x24x34

Besides, concerns with any oxidation of speaker cable pale into insignificance compared to oxidation of cable used inside amps, speakers, the mains, the power station etc etc.

Soldered connections are gas tight and don't oxidize.

Tremendous improvements in sound quality can be effected by removing ALL crimps / headers / connectors from the audio path and soldering the connections

@ieales, "Tremendous improvements in sound quality can be effected by removing ALL crimps / headers / connectors from the audio path and soldering the connections"

Tremendous?

Perhaps, but only if after 25 years or so they had become terribly pitted.

For many of us going that long without changing gear is beyond comprehension.

I'm sure you mean well but what you're suggesting is risky to say the least, and in most cases I believe, totally unnecessary.