Thank you for purchasing this product! Please read this manual carefully before using the product.
Front panel picture:
① …………………..……Headphone amplifier output (headphone)
② ……………………..…Audio input (mobile phone, PC, iPad)
③ ……………………..…Power indicator
④ ……………..…………Volume knob (increase clockwise and decrease counterclockwise)
Rear panel picture:
① ………………..…………Gain selector switch (H for high gain, it will add 6dB audio volume, L for low gain)
② ……………………………Charging indicator ( red during it is charging and blue when it is done)
③ ……………………………USB power input
Operation:
Step1: Make sure to turn the VOL knob to the minimum.
Step2: Connect the input with audio source.
Step3: Connect the output with headset.
Step4: Turn the knob clockwise to turn on the power.
Step5: Wear headphone and adjust the volume.
Specification:
|
Maximum power output |
350mW 32Ωload |
Distortion |
0.0003% |
|
Load impedance |
16-300Ω |
SNR |
≥120dB |
|
Working voltage |
DC3.7-4.2V |
Dimension(L*W*H) |
103*54*13MM |
|
Charging voltage |
DC5V |
Net weight |
85G |
|
Frequency response |
20Hz-20kHz(±3dB) |
Package size(L*W*H) |
135*62*31MM |
|
Battery capacity |
2000mAh (3,7V) Lithium-Battery |
|
|
FAQ:
Q: It is turned to the maximum, but the volume is still not loud enough. What should I do?
A: Our product is designed with a gain switch which can be set to H position if the sound is not loud enough.
Q: My headphone impedance is 200Ω. It can work?
A: According to our design theory, the product can support a headphone with 16-300 Ω impedance. Therefore that is completely OK.
Q: Does USB have a decoding function?
A: USB of this product only has a charge function, does not have OTG decoding function. You can purchase the related products of our company if you need a encoding function.
Q: All cables are connected, but there is no audio output?
A: 1. Please check the power indicator is on, if not, turn the potentiometer on.
2. If the power indicator lights, check that the VOL knob is in the smallest state, if it is, and it is normal to rotate clockwise in the minimum state.
3. If both of the above are normal, check whether the audio source playback device is paused, muted, or the volume is minimal.
Q: The device can work, but the intensity of music is not well?
A: The battery output is not enough and needs to be charged.
Q: Why the headphone has a big buzzing sound when the input line is connected but not play?
A: When an unshielded signal line is empty, an interference signal will enter the amplifier and be amplified. If you dislike the sound, we suggest you replace the shielded signal line or unplug the signal line.
Warning:
1. There is battery inside the product, do not open it privately.
2. Please do not put the machine in a high temperature and humidity environment.
3. Please choose the charger from regular manufacturer, poor quality charger may damage the product.
