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HifiMan Electronics HE-400 Over-Ear Headphones with EF-5 Headphone Amplifier Bundle (Black)

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This HiFiMan bundle includes:

  • HE-400 High Efficiency Over-Ear Headphones (Black/Blue)
  • EF-5 High Performance Headphone Amplifier with Tube Output for Hifi Application (Black)

HE-400 Over-Ear Headphones

The HE-400 is special because it is 92.5DB efficient so it can be driven by virtually anything including an iPod. It has the familiar HiFiMAN sonic signature which means it is very detailed yet warm.

  • Sensitivity: 92.5 DB
  • Impedance: 35 Ohm
  • Weight: about 440 gram or 14.5 Oz
  • Frequency response: 20Hz to 35 KHz


  • Package box
  • OFC copper headphone cable (3 meters or 10 Feet)
  • Leather earpad one pair
  • 1/4"(6.35mm) headphone adapter

EF-5 Headphone Amplifier

Hand built with tube output, HiFiMANs state-of-the-art headphone amplifier provides audiophile quality, amplified signal for high performance headphones and critical listeners. Wide bandwidth, low distortion and s/n greater than 95db, make the EF5 the clear choice for discriminating music lovers. Compatible with wide range of headphones for almost any hifi application.

  • Opamp: OPA275
  • Tube: Tianjin full music tube
  • Frequency Response: 20-30K Hz
  • THD+N: less than 0.2%
  • S/N: more than 95dB
  • Input impedance: 50K Ohm
  • Output impedance: 22K Ohm headphones
  • Output signal strength: up to 15 Volts at 32 Ohm
  • Input: RCA
  • Output: 1/4 headphone jack
  • Dimension: 110mm(W) x 50mm(H) x 270mm(D), or 4.33inch(W) x 1.97inch (H) x 10.63inch (D)
  • Weight: 6lb (include packing)
  • Accessories: 12AU7 tube, DY-1 power supply, compatible from 110v to 240v

Learn more about the HiFiMAN HE400EF5


Warranty, Returns, And Additional Information

Customer Reviews of the HiFiMAN HE400EF5

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