Please connect the input devices, like computers, mobile phones, DVDs to the Line in port, and then plug the headphones into the Line out port Correctly . Increase the volume of the input device and increase the master volume of the product.

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Neoteck Portable 3.5mm Headphone Amplifier Two-Stage Gain Switch, 16-300 Ohm, Aluminum Matte Surface

Neoteck Portable 3.5mm Headphone Amplifier Two-Stage Gain Switch, 16-300 Ohm, Aluminum Matte Surface

Q: 2. Can I use it while charging?

It is not recommended to use while charging, line noise may be generated. This is why the product is powered by lithium batteries, and battery power supply can avoid line noise.

Q: 3. Is it possible to transfer audio using the USB interface?

No, the USB interface of this product only has the charging function

Q: 4. The device can work, but the intensity of music is not well?

The battery output is not enough and needs to be charged.

Q: 5. Why the headphone has a big buzzing sound when the input line is connected but not play?

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.

Product ID: 265480701

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Details

Brand
Neoteck
Colour
Black
Material
Metal
Style
16-300Ω
Model name
NTK059

🎧16-300Ω impedance range

🔋12-hour rechargeable battery life

⚙️Two-stage gain switch

Description

🎧 Elevate your sound game—portable power meets pristine clarity!

PRECISION AUDIO BOOST - Experience crystal-clear sound with ultra-low distortion (THD+N 0.0003%) and SNR >120dB for immersive listening.
SLEEK DURABLE DESIGN - Aluminum matte finish offers a premium, comfortable grip while ensuring long-lasting durability for your on-the-go lifestyle.
TAILORED VOLUME CONTROL - Two-stage gain switch adapts effortlessly to headphones from 16 to 300 ohms, delivering perfect power every time.
UNIVERSAL COMPATIBILITY - Seamlessly connects with MP3, MP4, smartphones, and computers via 3.5mm AUX input/output for versatile use anywhere.
ALL DAY LISTENING FREEDOM - Rechargeable battery powers up to 12 hours of uninterrupted high-fidelity audio—no more mid-day drops.

The Neoteck Portable 3.5mm Headphone Amplifier delivers high-fidelity audio with a two-stage gain switch supporting 16-300 ohm headphones. Featuring a durable aluminum matte surface and a rechargeable battery lasting up to 12 hours, it offers distortion-free sound with SNR over 120dB and THD+N as low as 0.0003%. Compact and lightweight, it’s compatible with a wide range of digital devices via 3.5mm AUX input/output, perfect for professionals seeking premium audio on the move.

Specifications

Outer Material	Aluminum
Material	Aluminum
Item Weight	160 Grams
Lithium Battery Weight	6 Grams
Item Dimensions L x W	3.82"L x 2.36"W
Battery Weight	21 Grams
Style	Two-Stage Gain
Color	Black
Includes Rechargeable Battery	Yes
Battery Cell Composition	Lithium
Battery Description	Lithium
Output Wattage	40 Watts
Headphones Form Factor	Over Ear
Number of Batteries	1 Lithium Metal batteries required. (included)
Compatible Devices	Iphone, Tablet, Smartphone
Control Type	Button Control
Power Source	Rechargeable
Special Features	High Fidelity, Volume Control, Lightweight, Rechargeable