Belkin BreakFree
Now you can get the same kind of damage protection offered by Apple's MagSafe power connector for your guitar and amp thanks to the Belkin BreakFree ($20; September 2008). Offering noise-free, dynamic sound, the Breakfree causes no audio quality issues, and works with standard quarter-inch TRS plugs. It's the best way we've seen to keep the output on your axe and the input on your amp safe from cord-tugging damage.