It is turned to the maximum, but the volume is still not loud enough. What should I do?

This audio amplifier is designed with a gain switch,which can be set to “H” position if the sound is not loud enough.

Does Type-C have a decoding function?

Type-C of the headphone amplifier only has a charge function, does not have OTG decoding function.

All cables are connected, but there is no audio output?

1. Check the power indicator is on.

Why the headphone has a big buzzing sound when the input cable is connected but the sound is not play?

1. It is not recommended to use it when charging, because current interference and noise may be generated during the charging process.

Bluetooth cannot be connected?

Please unplug the 3.5mm audio input interface of headphone amplifier.

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Description

🎶 Elevate your audio game—because your ears deserve the best!

POWER MEETS PRECISION - Two-stage gain switch optimizes volume and clarity for high-impedance headphones.
SLEEK DURABLE DESIGN - Matte aluminum finish combines premium aesthetics with lightweight portability.
UNIVERSAL COMPATIBILITY - Seamlessly connects with MP3, phones, computers, and more for versatile listening.
ENDURANCE FOR ALL DAY USE - Rechargeable lithium battery powers your music for up to 15 hours on a single charge.
STUDIO QUALITY SOUND ANYWHERE - Bluetooth 5.0 wireless tech delivers crystal-clear audio with zero distortion.

The Neoteck Portable 3.5mm Headphone Amplifier with Bluetooth 5.0 is a compact, aluminum-bodied device designed to enhance audio quality for high-impedance headphones (16-150Ω). Featuring a two-stage gain switch, it delivers up to 40mW output power with ultra-low distortion (THD+N 0.0003%) and a signal-to-noise ratio above 100dB. Its rechargeable lithium battery offers up to 15 hours of wireless playback, making it perfect for professionals seeking premium sound on the go. Compatible with a wide range of digital devices, it transforms wired headphones into a wireless HiFi experience.

Specifications

Brand	Neoteck
Colour	Matte Gray
Material	Aluminium
Power Source	Battery Powered
Special Feature	Rechargeable
Battery Weight	21 Grams
Product Dimensions	9.6L x 6.1W Centimeters
Item Weight	121 Grams
Fit Type	In-Ear
Number of Batteries	1 Lithium Polymer batteries required.
Compatible Devices	MP3 player, MP4 player, Mobile Phone, Computer, CD player, Personal media player
Recommended Uses For Product	improving audio quality for high impedance headphones and earphones, wireless audio transmission for existing wired headphones and speakers
Control Type	Button Control
Lithium battery Weight	6 Grams
Battery Cell Composition	Lithium Polymer
Battery Description	Lithium-Polymer
Rechargeable Battery Included	Yes
Lithium Battery Voltage	3.7 Volts
Form Factor	In-Ear
Noise Control	Sound Isolation
Outer Material	Aluminum Matte
Manufacturer	Neoteck
Model number	16-300Ω
Item Weight	121 g
Batteries	1 Lithium Polymer batteries required.
Item model number	16-300Ω
Output Wattage	4E+1 Milliwatts
Included Components	1Bluetooth Headphone Amplifier,1USB Power Cable,1Audio Cable,1Manual
Battery type	Lithium-Polymer
Are batteries included?	No
Lithium battery energy content	4.4 Watt Hours
Lithium Battery Packaging	Batteries contained in equipment
Number of lithium ion cells	1
Number of lithium metal cells	1

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