Good helper: 1/4'' female to 3.5mm Stereo male plug extension cable or adapter (For example, connect the headphones to the piano with a 1/4Inch extension cable).
Upgraded version: They are sturdy and perfectly fit, Solved the problem that you need to change frequently when using the old adapter.
Design: Cables snap in/on nice and snug. No ing, humming or cutting out. For very little money there is a dramatic improvement in fidelity.
It is cool: it has a strong body that is made entirely, has a solid structure, and a black coat, perfect for carrying around.
Customer service: A hassle-free 18-month warranty and friend customer service.