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HiFiMAN EF400 R2R Himalaya DAC
Product Details
HiFiMAN EF400 Headphone Amplifier with R2R Himalaya DAC
Product Specifications
THD+N (Line Out): 0.002% - 0.004%
Channel Separation: 125 Β± 3dB
Max Output: 4.4W/ch
SN Ratio: 118 Β± 3dB (A-weighted)
Dimensions: 246.5mm (L) x 228mm (W) x 61mm (H)
Weight: 3.08kg
Purchased new in December 2025 from a major audio retailer and used for approximately 1 month.
All original accessories are included.
If desired, a receipt with personal information redacted can be provided.
Please feel free to contact us with any other questions.
Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.
Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.
Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.
Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.






