1. Product Overview
The TEYUN X200 is a compact and portable mini HIFI stereo sound power amplifier designed to enhance your audio experience for home entertainment, parties, and various audio setups. Featuring a high-performance TI TPA3255 chip, it delivers a powerful 2*150W output at 4Ω. The amplifier offers versatile connectivity with 5 input modes including Optical, Coaxial, Bluetooth 5.0, RCA, and PC (USB), and provides two output options for both passive and active speakers.

2. Safety Information
Please read and understand all safety instructions before using this product. Keep this manual for future reference.
- Do not expose this appliance to rain or moisture.
- Do not place objects filled with liquids, such as vases, on the appliance.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the appliance.
- Only use attachments/accessories specified by the manufacturer.
- Unplug this appliance during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
3. Package Contents
Ensure all items are present in the package:
- TEYUN X200 Amplifier (1 pc)
- USB Cable (1 pc)
4. Product Features
- High Power Output: 2*150W at 4Ω for robust sound.
- Advanced Chipset: Utilizes the TI TPA3255 power amplifier chip for high-fidelity audio.
- Durable Construction: Encased in a sturdy aluminum alloy shell.
- Tone Control: Independent HIGH and LOW EQ adjustments.
- Multiple Inputs: Supports Optical (OPT), Coaxial (COA), Bluetooth (BT), RCA, and PC (USB) audio sources.
- Versatile Outputs:
- L/R Speaker Output: Compatible with 4Ω-8Ω passive speakers.
- PRE 3.5mm Output: For connecting to active speakers, active subwoofers, or preamplifiers.
- Bluetooth 5.0: Provides stable and high-quality wireless audio transmission over 6 meters.

5. Controls and Indicators
The front panel of the TEYUN X200 features the following controls and indicators:
- POWER Switch: Toggles the amplifier ON/OFF.
- Input Mode Buttons: Individual buttons for OPT (Optical), COA (Coaxial), BT (Bluetooth), RCA, and PC (USB) to select the audio source.
- HIGH EQ Knob: Adjusts the high-frequency response.
- LOW EQ Knob: Adjusts the low-frequency response.
- MAIN Volume Knob: Controls the overall output volume.

6. Setup
6.1 Connecting Audio Sources and Speakers
Refer to the connection diagram below for proper setup. Ensure all connections are secure before powering on the device.

- Passive Speakers: Connect your 4Ω-8Ω passive speakers to the L/R speaker output terminals on the rear panel.
- Active Speakers/Subwoofer/Preamplifier: Use a 3.5mm cable to connect to the PRE 3.5mm output on the rear panel.
- CD Player/Mixing Console: Connect via RCA cables to the RCA input.
- Television: Connect via Optical or Coaxial cable to the OPT or COA input.
- Computer: Connect via USB cable to the PC input.
- Cell Phone: Connect via a suitable OTG cable (not included) to the PC input.
- Power: Connect the AC power cord to the amplifier and a standard AC 100-240V outlet.
6.2 Power On/Off Sequence
To avoid popping noises and protect your equipment, follow the recommended power-on and power-off sequence:

Power-on Sequence:
- Turn ON your audio source device (e.g., mixer, DVD player, PC).
- Turn ON the TEYUN X200 amplifier using the front panel POWER switch.
Power-off Sequence:
- Turn OFF the TEYUN X200 amplifier using the front panel POWER switch.
- Turn OFF your audio source device.
7. Operating Instructions
7.1 Selecting Input Source
Press the corresponding input button (OPT, COA, BT, RCA, PC) on the front panel to select your desired audio source.
7.2 Bluetooth Pairing
- Press the "BT" button on the front panel to select Bluetooth input. The Bluetooth indicator will likely flash (though not explicitly stated, this is standard behavior).
- On your mobile device, search for Bluetooth devices and select "X200" to pair.
- Once paired, the Bluetooth indicator should become solid, and you can stream audio wirelessly.

7.3 Adjusting Volume and Tone
- MAIN Volume: Rotate the MAIN knob to increase or decrease the overall audio volume.
- HIGH EQ: Rotate the HIGH knob to adjust the treble frequencies.
- LOW EQ: Rotate the LOW knob to adjust the bass frequencies.
8. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or aerosols.
- Ventilation: Ensure the amplifier has adequate ventilation. Do not block any vents.
- Storage: When not in use for extended periods, store the amplifier in a cool, dry place away from direct sunlight and extreme temperatures.
9. Troubleshooting
- No Sound:
- Check if the amplifier is powered on.
- Verify that the correct input source is selected.
- Ensure all audio cables are securely connected.
- Check speaker connections and ensure speakers are functional.
- Adjust the MAIN volume knob.
- Poor Sound Quality/Distortion:
- Check audio source quality.
- Ensure cables are not damaged or loose.
- Adjust HIGH and LOW EQ knobs.
- Reduce the volume if distortion occurs at high levels.
- Bluetooth Connection Issues:
- Ensure the "BT" input is selected on the amplifier.
- Make sure the amplifier is within the 6-meter Bluetooth range of your device.
- Try unpairing and re-pairing the device.
- Ensure no other devices are actively connected to the amplifier via Bluetooth.
- Popping Noises:
- Ensure you are following the correct power-on and power-off sequence as described in Section 6.2.
10. Specifications
The following table details the technical specifications of the TEYUN X200 amplifier:
| Feature | Specification |
|---|---|
| Model Number | X200 |
| Power Amplifier Chip | TI TPA3255 |
| Maximum Power Per Channel | 131-200W |
| Output Power | 2*150W (4Ω) |
| Input Interface | Optical fiber, Coaxial, RCA, Bluetooth, TYPE-C (PC/USB) |
| Output Interface | L/R Speaker Output, PRE 3.5mm Output |
| Impedance Range | 4-8Ω speaker |
| Signal-to-Noise Ratio | ≥108dB |
| Total Harmonic Distortion | 0.005% |
| Frequency Response Range | 20Hz-20kHz (+1.2dB) |
| Bluetooth Transmission Distance | ≥6M |
| Power Supply | AC 110-240V/50-60Hz |
| Product Dimensions (L*W*H) | 150mm * 155mm * 50mm |
| Material | Aluminum alloy shell |


11. User Tips
- For optimal sound quality, ensure your audio source provides a clean signal.
- When connecting a cell phone via PC (USB) input, ensure you have the correct OTG cable for your phone model.
- Experiment with the HIGH and LOW EQ knobs to tailor the sound to your preference and room acoustics.
12. Warranty and Support
For warranty information and technical support, please refer to the seller's policies or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.





