Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
The optional 50ohm resistor cable is used to compensate for lower quality headphone amplifiers that are common in many of the older MP3 players as well as for use on airplanes with built in sound systems. The cable lowers the overall sensitivity of the earpieces, which lowers the hissing noise that you may hear in these lesser amplifiers.
