HIFIMAN EF600 Review: A Bold Statement in All-in-One Desktop Audio Excellence

HIFIMAN EF600 – Technical Specifications Summary

DAC Section

• DAC Chip: HIFIMAN Hymalaya Pro (R2R ladder DAC design)
• Architecture: Fully discrete R2R with 0.01% precision resistors
• Processing: Custom FPGA algorithm
• Modes: NOS (Non-Oversampling) and OS (Oversampling)

Amplification

• Amplifier Type: Integrated headphone amplifier
• Power Output:
  • Balanced: 5.12W per channel
  • Unbalanced: 1.8W per channel
• Gain Settings: High and Low gain modes
• Impedance Compatibility: Suitable for both low-impedance IEMs and high-impedance planar magnetic headphones

Bluetooth / Wireless

• Bluetooth Chipset: Qualcomm QCC5124
• Supported Codecs:
  • LDAC
  • aptX-HD
  • AAC

Inputs

• USB-B
• USB-C
• Coaxial (SPDIF)
• Analog RCA input

Outputs

• Balanced XLR headphone output
• Unbalanced 6.35mm (1/4″) headphone output
• Analog RCA and XLR line outputs for DAC/preamp use

Physical Design

• Form Factor: Vertical desktop chassis
• Additional Feature: Functions as a headphone stand
• Chassis Material: Combination of brushed metal and vented polymer/plastic
• Weight: ~2.86 kg
• Thermal Design: Passive heat dissipation (can run warm under load)
• Volume Control: Front rotary knob (noted to feel slightly loose)

Software / UI

• Mobile App: Source switching and playback control
• Streaming Support: Compatible with PC, smartphone, NAS setups