HIFIMAN EF400: Headphone amplifier with Himalaya R2R DAC

In 2012, HIFIMAN introduced the legendary EF6 DAC and headphone amplifier, featuring significant power reserves and an especially detailed soundstage. Ten years later, HIFIMAN returns with the new EF400 , which features all the best of the latest technologies and, in particular, the brand's R2R Himalaya DAC module. The EF400 is a state-of-the-art DAC and headphone amplifier that is compact in size yet packs incredible audio performance.

The four-channel differential structure integrates a DAC, buffer and active filter and effectively drives the device's balanced outputs while delivering superior audio quality.

The amplifier circuitry, also consisting of four differential channels, allows it to achieve an impressive output level of 10.7Vrms (THD < 1%) into a 36Ω load.

Characteristics of HIFIMAN EF400:

• Product Type: R2R DAC/Headphone Amplifier
• Inputs: 1x USB-B/1x USB-C
• Outputs: 1x single-ended stereo RCA/1x balanced stereo XLR/1x single-ended 6.35mm Jack headphone/1x single-ended 3.5mm Jack headphone/1x balanced 4.4mm Jack headphone/1x balanced headphone XLR 4 poles
• SNR: 118 dB ± 3 dB (A-weighted)
• THD+N (linear output): Between 0.002% and 0.004%
• Channel Separation: 125 dB ±3 dB
• Maximum output power: 2x 4.4W
• Dimensions: 246.5 x 228 x 61 mm