Hello, John,
I bought the larger, spade connectors for the speaker, and the banana plugs for the amplifier end. The distributor will solder them for you, if you like, but I think it costs something like 30 bucks per connection (or maybe that's per pair, I don't remember) and Lars, who runs the distributor, said that they cannot really hear any positive advantage to soldering the connections. The small, spade connectors have a little tightening screw. The only tricky thing about using it, if our member correctly, is that it requires a metric hex wrench. The banana connectors are kind of interesting, as they allow you to have the cable coming in either flat to the banana plug itself, or at a 90° angle. You'd have to see it, it's hard to describe.
I spoke to somebody at Merlin, it wasn't Bobby, who said that while they love the Classic 6.0 cable, they had some doubts about the connectors causing some smearing. Bobby, is that correct?