iFi Silent Power DC Blocker usb-a female * A case is attached

* A case is attached to each of the two earpieces

Up to 24 hours of battery life for all-day listening

-Micro Fiber cleaning cloth

Instruction Manual

Input Impedance: 100 kΩ

iFi Silent Power DC Blocker usb-a female * A case is attachedThe amplifier is the heart of your system. If you have a mechanical hum, deploy the DC Blocker. Got big amplifier. Bye bye mechanical hum. Many large amplifiers have a really annoying mechanical hum (emitted from the toroidal transformer itself). You can hear it when you place your ear close or next to the chassis. This is caused by a small amount of DC voltage in the mains which makes its way through to the mains transformer, it will become saturated