Yes, I agree that keeping it from falling out does not improve the connectivity. My Acoustic Zen Tsunami into my Simaudio amp does not grab on to anything when inserted. There is no weight on it,...I made sure of that. It is just a very loose fit. I worry about it's not really being a tight fit, sound wise.
What to do? Anybody? Bend the inside of the end of the cord or bend the leads on the back of the amp?