| odel Name/Number | ALPEN 2-E17K | Color Available | Black | |
| Output Power | ＞ 200 mW (32 Ω/THD<1%) | Charge Time | ≤ 220 min | |
| THD+N | ＜0.003% (1 kHz) | Output Impedance | ＜ 1.1 Ω | |
| Frequency Response | 20 Hz~20 kHz | SNR | ＞113 dB (AUX IN Gain 0 dB/6 dB) | |
| Input Sensitivity | 2.7 V (0 dB) 1.38 V (6 dB) 0.68 V (12 dB) | Max Input Level | ＞4 Vrms | |
| Crosstalk | ＞75 dB (1 kHz) | Weight | 110 g | 104.1 mm×62.2 mm×12.8 mm |
| Audio Input | Micro USB/Coaxial/3.5 mm jack（COAXIAL adapter attached） | Headphone output | 3.5 mm stereo jack | |
| Volume Control | Digital Volume Control (0-60) | Bass Adjustment | Yes | |
| Recommended Headphne Impedance | 16~150 Ω (Recommended) | Power Input | DC5V 1A recommended | |
| Battery Capacity | ＞1500 mAh | Battery Life | Channel Imbalance | 0.5 dB |
| Gain | 0/6/12 dB | Bass Adjustment Range | ±10 dB | |
| MAX output voltage | ＞7.8 Vp-p | MAX Output Current | ＞80 mA |
Frequency Response diagram of curves.
Test condition：
Aux Input: 200 mV, TREBLE=OFF, BASS=ON
Red curve: Left channel; Blue curve: Right channel; Magenta curve: Left channel.