Headphones and Earphones

HiFiMAN HE-6 Planar Headphones and EF-6 Headphone Amplifier


Introduction to the HiFiMAN HE-6 Planar Headphones and EF-6 Headphone Amplifier

After reviewing a true bargain in the planar magnetic headphone market, the excellent sounding and easily driven HiFiMAN HE-400 (link to review), I moved onto their top of the line HiFiMAN HE-6. An intricately hand-made product, the HE-6 makes no compromises in its approach to high-end headphone design. Once unpacked I set out to see what makes the HE-6 such a good headphone and what it takes to let them truly sing.

The HE-6 is a planar magnetic design and its drivers use an extremely thin film of Mylar that has <1µ of gold deposited by vacuum evaporation to create the conductive pattern which is then aligned with an array of magnets. This thin film (76mm x 76mm) is what vibrates in order to produce sound. The use of gold allows for the very thin layer which is good for sonic performance, but has the drawback of being not the greatest conductor. This then leads to a less efficient, harder to drive headphone. As this is the best solution from a pure sonic standpoint, the drawback can be overcome with the use of a powerful dedicated headphone amplifier. Born out of this thought, the EF-6 is hand-built out of steel and aluminum and weighs a hefty 24 pounds. It can output 5 watts of pure Class A power and is more than capable of delivering the HE-6's to their full sonic potential.


  • HE-6 Planar Headphones
  • Sensitivity: 83.5 DB
  • MFR: 8 Hz - 65 kHz
  • Impedance: 50 Ohms
  • Weight: 1 Pound
  • MSRP: $1,299 USD
  • EF-6 Headphone Amplifier
  • Output: 4 Watts Pure Class A into 50 Ohms
  • THD+N: 0.03%
  • S/N: 95 dB
  • Power Supply Design: CLC filter
  • Dimensions: 4" H x 12" W x 13" D
  • Weight: 24 Pounds
  • MSRP: $1,599 USD
  • HiFiMan
  • Secrets Tags: Headphones, Earphones, Earbuds, HiFiMAN