| Model Name |
K1 |
KUNLUN-E18 |
ALPEN 2-E17K |
Q1 |
| General Specifications |
| Color Available |
Titanium |
Black |
Black |
Black |
| Dimensions |
50mm x 20.5mm x 8mm |
130 mm×66.2 mm×14.6 mm |
104.1 mm×62.2 mm×12.8 mm |
97mm x 56mm x 13.1mm |
| Weight |
11.3g (incl. belt clip) |
162 g |
110 g |
100 g |
| Displayer |
N/A |
N/A |
OLED 128×64/1.3 inch |
N/A |
| Analog Audio input |
N/A |
3.5 mm stereo Jack |
3.5 mm stereo Jack |
Micro USB/3.5 mm Jack |
| Digital Audio input |
N/A |
N/A |
Micro USB/Coaxial/3.5 mm jack
（COAXIAL adapter attached）
|
N/A |
| Headphone output |
3.5 mm stereo Jack |
3.5 mm stereo Jack |
3.5 mm stereo Jack |
3.5 mm stereo Jack |
| Line Output |
N/A |
3.5 mm stereo Jack |
Dock(Micro USB)/3.5 mm Line Out port |
3.5 mm stereo Jack |
| Headphone Impedance Range |
16~100 Ω(Recommended) |
16~150 Ω |
16~150 Ω |
16~150 Ω (Recommended) |
| Volume Control |
N/A |
ALPS Potentiometer |
Digital Volume Control (0-60) |
TOCOS Potentiometer |
| Bass Adjust |
N/A |
/ |
±10 dB |
0/5dB |
| Treble Adjust |
N/A |
0 dB/6 dB |
±10 dB |
N/A |
| Balance Adjust |
N/A |
/ |
5 dB |
N/A |
| GAIN Control |
N/A |
0/6 dB |
0/6/12 dB |
AUX IN:-7dB/4.5dB |
| USB IN:-3.5dB/8dB |
| Line Out Bypass |
N/A |
YES |
YES |
YES |
| Audio Performance (DAC Section) |
| USB Sample Rate Support |
32/44.1/48/96 kHz (16/24 bit) |
32/44.1/48/96 kHz (16/24 bit) |
32/44.1/48/96 kHz (16/32 bit) |
32/44.1/48/96 kHz (16/24 bit) |
| DSD 2.8 MHz Supported |
| SPDIF Sample Rate Support |
N/A |
/ |
32/44.1/48/96/192 kHz (16/24 bit) |
N/A |
| THD+N |
＜0.01% (1 kHz) |
＜0.005% (32 Ω/1 kHz) (PO) |
＜0.003% (1 kHz) |
＜0.0045% (10 kΩ/1 kHz) (LO) |
| ＜0.003% (32 Ω/1 kHz) (LO) |
| SNR |
≥100 dB |
＞106 dB |
＞105 dB |
≥107 dB |
| Dynamic Range |
N/A |
＞100 dB |
＞102 dB |
＞95 dB |
| Line Out Level |
N/A |
＞1.3 Vrms |
＞1.5 Vrms |
＞1.48 Vrms |
| Audio Performance |
| Output Power1 |
>75 mW（16Ω / THD+N＜1%) |
＞300 mW (32 Ω/THD+N＜1%) |
>200 mW (32 Ω/THD<1%) |
＞190 mW (32 Ω/THD+N＜1%) |
| Output Power2 |
>35 mW（32Ω/THD+N＜1%) |
＞400 mW (16 Ω/THD+N＜1%) |
＞290 mW (16 Ω/THD+N＜1%) |
＞75 mW (150 Ω/THD+N＜1%) |
| Frequency Response |
20 Hz~20 kHz |
20 Hz~20 kHz |
20 Hz~20 kHz |
20 Hz~20 kHz |
| SNR |
N/A |
＞110 dB (AUX IN) |
>106 dB(AUX IN Gain 12 dB) |
≥110dB (AUX IN) |
| >113 dB(AUX IN Gain 0 dB/6dB) |
| Output impedance |
≤ 1 Ω |
＜0.3 Ω |
＜1.1 Ω |
＜0.3 Ω |
| Crosstalk |
≥70 dB |
＞72 dB (1 kHz) |
＞75 dB (1 kHz) |
≥75dB (1 kHz) |
| THD+N |
N/A |
＜0.005% (32 Ω/1 kHz) (PO) |
＜0.003% (1 kHz) |
＜0.005% (32 Ω/1 kHz) |
| ＜0.003% (32 Ω/1 kHz) (LO) |
| Max. Gain |
N/A |
/ |
＞12 dB |
N/A |
| Peak Output Voltage |
3.25Vp-p |
8 Vp-p |
＞7.8 Vp-p |
7.2 Vp-p |
| Max. output Current |
>35.93mA |
＞94 mA |
＞115 mA |
＞75 mA |
| Input Overload |
N/A |
1.5 Vrms |
4 Vrms |
4.3 Vrms |
| Power and Battery |
| Power/Charger |
N/A |
Recommend DC5V 2A |
Recommended DC5V 1A |
Recommend DC5V 1A |
| Charing Display |
N/A |
YES |
YES |
YES |
| Battery Level display |
N/A |
NA |
YES |
N/A |
| Capacity |
N/A |
3500 mAh |
1500 mAh |
1400 mAh |
| Battery Life |
N/A |
＞25 h (1 kHz) (AUX IN) |
＞15 h |
＞30 h |
| ＞12 h (USB IN) |
| Charge Time |
N/A |
4 h |
≤220 min |
≤4 h |
