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The HIFIMAN EF400 is a balanced desktop DAC and amplifier that delivers powerful, high-fidelity audio in a sleek design. Utilizing HIFIMAN's HIMALAYA R2R DAC technology, it offers detailed and natural sound reproduction. With multiple headphone outputs, including balanced and unbalanced options, and support for both high and low gain settings, the EF400 accommodates a wide range of headphones. Its compact footprint makes it an ideal addition to any desktop audio setup.

Key Features

  • HIMALAYA R2R DAC module for detailed and natural sound
  • Balanced and unbalanced headphone outputs for versatile connectivity
  • High and low gain settings to match various headphone sensitivities
  • Compact and stylish design suitable for desktop use
  • USB Type-B and Type-C inputs for flexible digital connectivity

Why Buy

The HIFIMAN EF400 offers audiophiles a powerful and versatile solution for high-quality audio playback. Its advanced DAC technology and robust amplification ensure an engaging listening experience, making it a valuable addition to any audio enthusiast's collection.

  • High-fidelity sound with precise detail and clarity
  • Versatile connectivity options for various audio setups
  • Compact design that fits seamlessly into any desktop environment

Product Specifications

Product Specifications
Brand HIFIMAN
Model EF400
Type Balanced Desktop DAC and Amplifier
Connectivity
Bluetooth No
Input Options USB-C, USB-B
Output Options 4.4mm Balanced, XLR Balanced, 6.35mm SE
Power
Power Output 4.4W per channel @32Ω (balanced)
Battery Life Not applicable (AC-powered)
Charging Time Not applicable
Audio Features
DAC Chip HIFIMAN Himalaya R2R DAC (Discrete Ladder DAC)
Supported Audio Formats PCM up to 24bit/768kHz, DSD256 (Native)
Signal-to-Noise Ratio (SNR) >118dB
Total Harmonic Distortion (THD) <0.002%
Size and Build
Dimensions 246 x 228 x 61 mm (9.7 x 9.0 x 2.4 in)
Weight 3.08 kg (6.8 lbs)
Compatibility
Compatible Headphones 8–600Ω impedance headphones
Operating Systems Supported Windows, macOS (no drivers required for macOS)
Additional Features
Noise Cancellation No
Customizable EQ No
Warranty
Warranty 1 Year

HIFIMAN EF400 - Balanced Desktop DAC and Amplifier - Open Box FAQs

What types of headphones are compatible with the HiFiMan EF400?

The HiFiMan EF400 is compatible with a wide range of headphones, including both high-sensitivity in-ear monitors (IEMs) and power-demanding over-ear headphones. It offers multiple output options—3.5mm single-ended, 4.4mm balanced, 6.35mm single-ended, and 4-pin XLR balanced—to accommodate various headphone connections. For high-sensitivity IEMs, it's recommended to use the low-gain mode to prevent excessive power output.

Does the HiFiMan EF400 support both NOS (Non-OverSampling) and OS (OverSampling) modes?

Yes, the HiFiMan EF400 supports both NOS and OS modes. Users can switch between these modes to tailor the sound to their preferences. According to HiFiMan, the OS mode typically sounds natural, while the NOS mode offers a balanced and neutral presentation.

Is the HiFiMan EF400 suitable for driving power-hungry headphones?