Protect Your Amplifier and Headphones
Protect amplifiers and headphones when using HiFiMan's HE-6, HE-5LE, and HE-4 headphones. The efficiency of these great-sounding headphones is so low, that most headphone amps can't power them, so audiophiles would like to use them with their 'big' amplifiers.
HiFiMan's HE-Adapter box connects directly to your integrated amp, power amp, or receiver using speaker cables. It's small, inexpensive, and lets you enjoy your HE headphones with a wide range of components.
Note: The HE-Adapter is not for any high or average efficiency headphones, such as HE-300 and HE-500.