Do-gooders work well with my keyboard and amp. They're great for my back yard setup. They are crystal clear and a produce a louder signal.

Hum and cracking noise right out of the box. Any company that ships audio cables folded is not a professional audio company.

For connecting two patch cords together. Always a great idea to keep a few of these in your gig bag. If you use this with cables that have right angle plugs make sure there is no sideways pressure, or you may get a clicking noise.

The 2 connectors that arrived are so noisy that they are completely useless. They were extremely cheaply made. Failed after 2 months.