What makes HE-400 special is:
1) it is 92.5DB efficient so it can be driven by virtually anything including an iPod.
2) It has the familiar HiFiMAN sonic signature which means it is very detailed yet warm
3) It is only $399 MSRP. We price it at such a price because we finally figure out a way to mass produce hi-end sound quality planar driver headphones in a much easier way than before.
Sensitivity: 92.5 DB
Impedance: 35 Ohm
Weight: about 440 gram or 14.5 Oz
Frequency response: 20Hz to 35 KHz
OFC copper headphone cable (3 meters or 10 Feet)
Leather earpad one pair
1/4"(6.35mm) headphone adapter
To US, Canada and Russia: USPS
To any other countries: International Express mail (EMS, UPS, DHL or Fedex)
30 days refund: shipping cost is not refundable.
3 year replacement: Customers will pay shipping cost.