Perfect for speaker-level inputs.
Crutchfield Customer Review (What's this?)
Wow, what a fantastic product! I have installed many amps and speakers to factory radios in the past. What did I ever do without these?! I have spliced into speaker wires in the past and accidently cut the wire. Then you have to re-splice and either use electrical tape. These things are so efficient! No more cut wires. No more electrical tape. No crimping! These are brilliant! Just make sure you get the right size. After you screw it in, make sure that you unscrew it and look inside to see that the pin actually punctured the wire. Also make sure that the splicing into the wire is the sharp side, otherwise it will never work
Pros: easy, quick, no crimping, no cutting, no tape