| Khuyến mãi |
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| Thông số kỹ thuật |
| 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 |
80 cm |
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 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)
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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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| Model Name |
K1 |
Color Available |
Titanium |
| Weight |
11.3g (incl. belt clip) |
Dimensions |
50mm x 20.5mm x 8mm |
| Audio Input |
Micro USB |
Headphone output |
Standard 3.5mm Port |
| Drive ability |
16~100 Ω(recommended) |
Power supply |
USB powered |
| Output Power1 |
>75 mW（16Ω/THD+N＜1%) |
Output Power2 |
>35 mW（32Ω/THD+N＜1%) |
| THD |
＜0.01% (1 kHz) |
Output Impedance |
≤ 1 Ω |
| Frequency Response |
20 Hz~20 kHz |
SNR |
≥100dB (A-weighted) |
| Input Sensitivity |
>0 dB |
MAX input Level |
N/A |
| Crosstalk |
≥70 dB (1 kHz) |
Channel imbalance |
< 0.3dB |
| Gain |
1.2 dB |
Status LED |
yes (blue light when on) |
| MAX output voltage |
3.25Vp-p |
MAX output current |
35.93mA |
Frequency Response diagram of curves
- Test condition：play -5 dB sinusoidal signal - Headphone output
- Red curve: Left channel
- Blue curve：Right channel
Distortion diagram of curves.
- Test condition：Play -3 dB sinusoidal signal - headphone output
- Red curve: Left channel
- Blue curve: Right channel
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