Brand new and factory sealed.
HiFiMan HE400i and EF100 Amplifier Combo
To get the best performance from any quality headphone, you need the right amplifier driving it. The new HIFIMAN EF100 amplifier is a great complement to the HIFIMAN HE400i.
We've packaged them as compelling combos to deliver outstanding performance and exceptional value.
HE400i Full-Size(Over Ear) Planar Magnetic Headphones
Frequency Response: 20Hz - 35KHz
Impedance: 35 Ohms
Weight : 13.5Oz (370g)
Input impedance: 47k
Output impedance: 32-300 Ohm
Output voltage and output power under 30 ohm load: 7.8v, 2000 mw
Frequency response: 20-20khz +/- 0.2db
Power amplifier output:
Each channel: 4.5 w (4 ohm load)
Frequency response: 20-20khz +/- 1db