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Specifications:
Output Power 70 mW (32 ohms Loaded)
12 mW (300 ohms Loaded)
Signal to Noise Ratio >= 90 dB (A Weight)
Distortion < 0.05% (10 mW)
Frequency Response 10 Hz - 40 kHz
Suitable Headphone Impedance 16 ohms - 300 ohms
Weight 11 grams (without battery)
Power Supply 1 AAA Battery
Dimensions 55 mm x 23 mm x 14.5 mm
Buy Following Earphones from head-direct.com to get a free Fiio E3
YUIN OK1
http://www.head-direct.com/products.php?p=27
YUIN OK2
http://www.head-direct.com/products.php?p=28
YUIN OK3
http://www.head-direct.com/products.php?p=29
YUIN G1
http://www.head-direct.com/products.php?p=35
HEAD-DIRECT RE1
http://www.head-direct.com/products.php?p=26
HEAD-DIRECT RE2
http://www.head-direct.com/products.php?p=23
