The HiFiMAN EF400 is an advanced headphone amplifier and digital-to-analog converter (DAC) that offers exceptional sound quality in a compact, stylish package.

Hymalaya R2R DAC - the heart of the device

The EF400 features the Hymalaya R2R DAC, which is based on high-precision resistors and an optimized FPGA algorithm, delivering natural sound with crisp details.

Four-channel design

The amplifier's unique four-channel differential design allows for excellent balance of the audio signal, delivering a maximum output power of 4.4 Watts per channel at a 32-ohm load.

Flexibility and rich connectivity

• XLR 4-pin outputs
• 4.4 mm balanced outputs
• 6.35 mm and 3.5 mm single-ended
• RCA (single-ended)
• XLR
• Two USB ports (Type-C and USB-B)

Intuitive operation and functions

The EF400 features a four-level function switch for selecting between OS (Oversampling) and NOS (Non-Oversampling) settings in high and low gain modes.

Robust construction and elegant design

Made from high-quality materials, the EF400's casing features a sleek, minimalist design that perfectly matches the aesthetics of modern audio systems.

Performance and reliability

The EF400 is designed with stability and performance in mind, ensuring reliable operation even under intense usage conditions.