HIFIMAN HE400i Headphones and EF2C USB-DAC Hybrid Tube Amplifier Bundle

HIFIMAN HE400i Headphones and EF2C USB-DAC Hybrid Tube Amplifier Bundle

HIFIMAN HE400i Headphones and EF2C USB-DAC Hybrid Tube Amplifier Bundle

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Product Highlights

  • HE400i Planar Magnetic Headphones
  • EF2C USB-DAC Tube Headphone Amplifier
  • For High-Fidelity Computer Audio
  • Circumaural Open-Back Design
  • Single-Sided Planar Magnetic Drivers
  • Frequency Response: 20 Hz to 35 kHz
  • Vacuum Tube with Solid-State Technology
  • Desktop Design
  • USB and RCA Inputs
  • Detachable Cable
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HIFIMAN HE400i overview

  • 1Description

The HIFIMAN HE400i + EF2C Combo matches the HE400i single-ended planar magnetic headphones with the EF2C USB-DAC hybrid tube headphone amplifier to provide audiophiles with high-fidelity computer audio at home or the office.

The HE400i headphones are equipped with single-ended, full-size planar-magnetic drivers, which provide an accurate, 20 Hz to 35 kHz frequency response and wide spatial imaging. The large drivers are also designed to provide accurate transient response and sound quality.

Featuring a compact desktop design, the EF2C is a hybrid headphone amplifier that combines the warmth of two 6J1 vacuum tubes at its inputs with the advantages of low distortion and high S/N ratio from the solid-state OPA2604 op-amp at its output. You can connect the unit to your computer using the included USB cable and listen to your music via the integrated USB-DAC. A step potentiometer on the front panel provides precise level control and accurate channel balance.

HE400i Headphones
  • Easy-to-drive, single-ended planar magnetic driver for critical listening at home or in the studio
  • Planar magnetic technology provides accurate transient response and sound quality
  • Sensitivity of 93 dB allows the headphone to be driven with a modest-size amplifier or used with smartphones and portable audio players
  • ABS polymer ear cups in a gloss charcoal finish
  • Pressure pattern designed to provide comfort
  • Beveled earpads made of pleather and velour provide comfort and high sound quality
  • Quick response time due to lightweight diaphragm design
  • Detachable cable attaches using 2.5mm connectors
  • Includes 4.9' cable with 1/8" connector
  • Includes 1/4" adapter and leatherette presentation case
EF2C Headphone Amplifier
  • Hybrid design combines warmth of vacuum tubes with low distortion of solid-state technology
  • Desktop design
  • Integrated USB DAC converter
  • Advanced Step Potentiometer for precise volume control
  • CM102S USB DAC chip
  • 2 x Chinese 6J1 (6AK5) vacuum tubes
  • Op-amp: OPA2604
  • Frequency response: 20 Hz to 20 kHz
  • Includes power supply adapter (110-220V)
  • USB and RCA inputs
  • Includes USB cable
In the Box
HIFIMAN HE400i Headphones and EF2C USB-DAC Hybrid Tube Amplifier Bundle
  • HE400i Single-Ended Planar Magnetic Headphones
  • EF2C USB-DAC Hybrid Tube Headphone Amplifier
  • 2 x 6J1 Tubes
  • USB Cable
  • Power Adapter
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    HIFIMAN HE400i specs

    Driver Type Planar
    Design Over-Ear (Circumaural)
    Earcup Style Open-Back
    Frequency Response 20 Hz to 35 kHz
    Sensitivity 93 dB
    Impedance 35 Ohms
    Audio Connector 1/8" (3.5 mm)
    Adapter (Included) 1/4" (6.3 mm)
    Connector to Earpiece 2 x 3/32" (2.5 mm)
    Design U-Type
    Color Black
    Detachable Yes
    In-Line Remote/Microphone No
    Cable Length 4.9' / 1.49 m
    Weight 13.1 oz / 370 g 

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