1. Introduction
Thank you for choosing the Neoteck 3.5mm Headphone Amplifier with Bass Boost. This portable HiFi amplifier is designed to enhance your audio experience by providing louder, clearer, and more dynamic sound for headphones with impedances ranging from 16 to 300 Ohms. This manual provides detailed instructions for the proper setup, operation, and maintenance of your device.
Figure 1: Neoteck 3.5mm Headphone Amplifier.
2. Product Overview
2.1 Key Features
- High-Fidelity Sound: Features a 3.5mm AUX input and output, with an SNR>120dB and THD+N of 0.0003%, delivering sharp, realistic stereo sound without distortion.
- Enhanced Bass Performance: A dedicated bass switch allows for a more delicate and mellow bass response.
- Universal Compatibility: Compatible with various digital devices including MP3 players, iPods, mobile phones, laptops, notebooks/netbooks, portable CD players, Mac, PS4, and PS5 controllers.
- Extended Battery Life: Built-in rechargeable battery provides over 8 hours of continuous use.
- Compact and Durable: Constructed with an aluminum matte surface, this amplifier is lightweight, compact, and designed for portability.
2.2 Package Contents
Please check the package for the following items:
- 1 x Neoteck Headphone Amplifier (Model NTK153)
- 1 x Power Cable (USB to Micro USB)
- 1 x Audio Cable (3.5mm to 3.5mm)
- 1 x User's Manual
Figure 2: Package contents of the Neoteck Headphone Amplifier.
3. Setup
Follow these steps to set up your Neoteck Headphone Amplifier:
- Charge the Amplifier: Before first use, fully charge the amplifier using the provided USB power cable. Connect the Micro USB end to the amplifier's charging port and the USB-A end to a compatible USB power source (e.g., computer USB port, USB wall adapter). The charging indicator light will show the charging status.
- Connect to Source Device: Use the provided 3.5mm audio cable to connect your audio source (e.g., smartphone, MP3 player, laptop) to the amplifier's 3.5mm input jack.
- Connect Headphones: Plug your headphones into the amplifier's 3.5mm output jack.
Figure 3: Charging the Neoteck Headphone Amplifier.
Figure 4: Connection diagram for the Neoteck Headphone Amplifier.
Video 1: Demonstrates the setup and connection process for the Neoteck 3.5mm Headphone Amplifier with a smartphone and headphones.
4. Operation
Once connected, operate your amplifier as follows:
- Power On/Off and Volume Control: Rotate the volume knob clockwise to turn the amplifier ON and increase the volume. Rotate counter-clockwise to decrease volume and turn OFF.
- Bass Boost: Use the 'OFF-BASS-ON' switch to activate or deactivate the bass boost feature. Slide the switch to 'ON' for enhanced bass.
Figure 5: Amplifier controls: Volume knob and Bass switch.
Note: It is not recommended to use the amplifier while charging due to potential current interference and for safety reasons.
5. Maintenance
To ensure the longevity and optimal performance of your Neoteck Headphone Amplifier, follow these maintenance guidelines:
- Keep the device clean by wiping it with a soft, dry cloth. Avoid using liquid cleaners or solvents.
- Store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid dropping the device or subjecting it to strong impacts.
- Do not attempt to disassemble or repair the amplifier yourself, as this will void the warranty and may cause damage.
6. Troubleshooting
If you encounter issues with your amplifier, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound | Amplifier is off; low battery; incorrect cable connection; source device volume too low. | Turn on the amplifier and increase volume; charge the battery; ensure all cables are securely connected; increase volume on the source device. |
| Distorted sound | Volume too high on amplifier or source; faulty cable; incompatible headphones. | Reduce volume on amplifier and source; try a different audio cable; ensure headphones are within the 16-300 Ohm impedance range. |
| Bass boost not working | Bass switch is off. | Slide the bass switch to the 'ON' position. |
| Short battery life | Battery not fully charged; aging battery. | Ensure the amplifier is fully charged before use; if battery life significantly degrades, contact customer support. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | NTK153 |
| Item Weight | 6 ounces |
| Product Dimensions | 3.8 x 0.59 x 2.4 inches |
| Compatible Headphone Impedance | 16-300 Ohm |
| Connector Type | 3.5mm Jack (Input/Output) |
| Material | Aluminum |
| Output Wattage | 50 Watts |
| Battery Type | Lithium Polymer |
| Battery Capacity | 300 Milliampere Hour (mAh) |
| Power Source | Battery Powered |
| Compatible Devices | Computers, MP3, MP4, Mac, Phones, iPad, PS4, PS5 Controller |
8. Warranty and Support
Neoteck products are designed for reliability and performance. For warranty information or technical support, please refer to the documentation included with your purchase or visit the official Neoteck website. Keep your purchase receipt as proof of purchase for warranty claims.
