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Name/Model No. i1(Fi1123) Color Black
Weight about 11.5g Dimensions 45.5mm in length, 9.5mm in diameter
Input Interface MFi standard lightning plug Output Interface 3.5mm stereo jack
Drive Ability 16~32 Ω (recommended) Supported USB Sample Rate  Lossless 48kHz, may change to up to 192kz pending changes to the LAM module
Battery Capacity N/A Power Supply USB on iPod/iPad/iPhone
Output Power 1 >30 mW(16Ω loaded/ THD+N<1%) Output Power 2 >15 mW(32 Ω loaded/THD+N<1%)
THD+N <0.003% (1 kHz) Output Impedance <1 Ω(16Ω loaded)
Frequency Response 20 Hz~20 kHz SNR ≥105 dB (A-weighted/32Ω loaded)
Cable Length 80cm / 7cm CODEC Chip NAU88L25
Crosstalk ≥60 dB Status LED N/A(working status noticed by the special app)
Supported Devices

(Be compatiable with the iOS 8.0 and above)

iPhone X/iPhone 8/iPhone 8 Plus/iPhone 7 Plus/iPhone 7/iPhone SE/ iPhone 6s Plus/iPhone 6s/iPhone 6 Plus/iPhone 6/iPhone 5s/iPhone 5c/iPhone 5


iPad Pro(9.7-inch)/ iPad Pro(12.9-inch)/iPad Air 2/iPad Air/ iPad(4th generation)/iPad mini 4/iPad mini 3/iPad mini 2/ iPad mini


iPod touch (6th generation)/ iPod touch(5th generation)

Frequency Response diagram of curves

Test condition:play -5 dB sinusoidal signal, Headphone output

Green curve: Left channel  ;  Blue curve:Right channel


Distortion diagram of curves.

Test condition:play -3 dB sinusoidal signal, headphone output


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