RuiPuo Portable Headphone Amplifier 3.5mm Stereo Audio in/Out Support Volume Control with GAIN Switch, Rechargeable Battery, 3.5mm Headphone Amp for Switch/PS4/iPhone/PC/MP3/4 /HD 650 Headphones ect.

Price: $21.99
(as of May 13, 2024 05:26:35 UTC – Details)

Product Description

Many laptops and phones have a weak audio output from their headphones or distort when you turn up the volume. External headphone amplifiers like these can solve (or reduce) this problem.

Excellent construction, strong structure.

The multi-colored (red/blue) charging indicator on the back is convenient and can be charged for several hours.

Micro USB makes it easy to find a charger.

NOTE:

DAC is not supported.Microphone input is not supported.Does not work with wireless Bluetooth headphones or earbuds.Sound quality depends on the source.There is a low/high gain switch, so if you are running low on sound, make sure to turn it to high.Do not charge when using, otherwise there will be a little static electricity.Make the existing sound signal very loud, so you should use caution and turn the volume back appropriately.

Specification

IN/OUT: 3.5mm AUX SNR: >120dB Headphone Impedance: 16-300Ω Distortion: : 0.004% Battery Capacity: 1000mAh Amp Using Time: More Than 15 Hours Working voltage: DC3.7-4.2V Charging voltage: DC5V

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.

Headphone Amplifier listens to streaming radio stations, iTunes, personal recordings and YouTube music. Designed to help friends who need to increase their volume.
Portable Headphone Amplifier: Compact amplifier with black brushed metal case, strong structure, light and small, can easily fit into a pocket to carry it around, easy to travel.
The battery charged by Micro USB can last 15 hours and has a long battery life. Capacity: 2000mAH (3.7V). Out of the box.
There are power/volume knobs and gain switches for easy volume control, solving the difficulty of reducing the volume of the headphone jack in Windows 10.
3.5mm Headphone Amplifier compatible with Nintendo Switch, PS4, iPhone, speaker, tablet, laptop, PC, Smartphone, DVD player, MP3, MP4, HD668B, DT770 PRO, HD 650, Beats Pro, MDR-7506 earphone and car AUX inputs ect.