This is one of those really boring products that just does what its supposed to.
Everyone is interested in your guitar, your cab, or what pedals you use, but if you can't wire up your PA your gig isn't even gonna get started.
You'll chuck this connector in your gear bag and probably forget you're got it, but when you need it you be glad you have it.
Solid construction. Doesn't add any colour or interference to the signal. Not gonna break anytime soon.
Works with the 2 pole speakon connectors I and most of us use. haven't had the need or chance to test it with 4 pole speakons yet.
The locking mechanism only locks on one side, which is about the only criticism.