There are light weight banana plugs designed to be used with test and measurement equipment.\nAnd there are heavy weight banana plugs designed to be used with speaker cables.\nWith limited access to the amp terminals, heavy banana plugs are the best choice.\n\n\nYou'll never see the reason why your last comments don't matter until you learn about current. Read my previous post. There's no banana plug on the planet that won't handle the signal from just about ANY audio amplifier with a 4 Ohm load. The power level isn't continuous and even at 6000W, they'll become warm, but who'll be operating at that level? \n\nWRT lightweight lugs for testing- the application dictates the connector. ALWAYS. Only voltage, resistance and current matter- If the amplifier doesn't have large heat sinks, you don't need "heavy" banana plugs because the amp can't deliver enough current for this to matter. You're not going to magically see more power from an amplifier than what the power circuit can deliver from the wall outlet. Not gonna happen. Can't happen.