1. Introduction
The Teyun A8 is a professional 8-channel audio mixer designed for a wide range of applications, including karaoke, home studio recording, live performances, church events, and parties. It features 6 mono and 1 stereo channel, 24 built-in DSP effects, 48V phantom power, Bluetooth connectivity, and USB recording/playback capabilities. This manual provides detailed instructions for setting up, operating, and maintaining your Teyun A8 audio mixer.
2. Key Features
- 8 Channels: 6 mono input channels and 1 stereo input channel.
- 24 DSP Effects: Integrated digital signal processing with 24 effects for enhanced audio.
- 48V Phantom Power: Available for condenser microphones on channels 1-4.
- Bluetooth Function: Wireless audio streaming from compatible devices.
- USB Record & Play: Direct recording to and playback from USB storage devices.
- PC Interface: Connects to a computer for recording and playback.
- 3.5mm Condenser Mic Input: Dedicated input for condenser microphones.
- RCA Input & Output: Additional connectivity options.
- Power Supply: DC 5V 2A.
3. Packing List
Please check the contents of your package upon unboxing:
- Audio Mixer (Teyun A8) - 1 pc
- Power Adapter (DC 5V 2A) - 1 pc
- USB Cable - 1 pc
- English Manual - 1 pc
4. Setup
Follow these steps to set up your Teyun A8 audio mixer:
4.1 Power Connection
- Ensure the mixer is turned off.
- Connect the provided DC 5V 2A power adapter to the mixer's power input port.
- Plug the power adapter into a suitable power outlet.
4.2 Input Connections
The Teyun A8 supports various input sources:
- Microphones (XLR/TRS): Connect dynamic or condenser microphones to the MIC/LINE inputs (channels 1-6). For condenser microphones requiring phantom power, ensure the +48V button is pressed for the respective channels (1-2 or 3-4).
- Instruments (TRS): Connect instruments like guitars or electronic keyboards to the LINE inputs.
- 3.5mm Condenser Mic: Use the dedicated 3.5mm input for compatible condenser microphones.
- Stereo Line Input (RCA): Connect stereo audio sources to the RCA L/R inputs.
4.3 Output Connections
- Main Output (L/R): Connect to active speakers or an amplifier using TRS cables.
- Headphone Output: Connect headphones for monitoring.
5. Operating Instructions
5.1 Channel Controls
Each mono channel (1-6) features the following controls:
- GAIN: Adjusts the input sensitivity.
- HIGH/MID/LOW: 3-band equalizer for tone shaping.
- FX/PC REC: Sends signal to the effects processor or PC recording.
- PEAK: Indicator light for signal clipping.
- LEVEL: Adjusts the channel's output volume.
5.2 DSP Effects
The Teyun A8 includes 24 digital signal processing effects:
- Use the UP/DOWN buttons to select an effect number displayed on the screen.
- Adjust the FX/PC REC knob to control the effect send level for each channel.
- The main FX knob controls the overall effect return level.
5.3 Bluetooth Function
To connect a Bluetooth device:
- Press the MODE button until "BLUE" appears on the display.
- The "BLUE" indicator will flash, indicating it's in pairing mode.
- On your mobile device, search for "TEYUN A8" in the Bluetooth settings and connect.
- Once connected, the "BLUE" indicator will stop flashing.
5.4 USB Recording & Playback
The mixer supports direct recording to and playback from a USB stick.
5.4.1 USB Playback
- Insert a USB stick into the USB port.
- Press the MODE button to select "USB" status.
- Press MODE again to choose "MP3 Mode" for playback.
- Use the playback controls (play/pause, next, previous) to manage your audio.
5.4.2 USB Recording
- Insert a USB stick into the USB port.
- Press the MODE button to select "USB" status.
- Press the FX/PC REC button.
- Long press the RECORD button to start recording. The display will show a recording indicator.
- Long press the RECORD button again to stop and exit recording.
5.5 PC Recording & Playback
Connect the mixer to your computer using the provided USB cable. The mixer functions as an external sound card, allowing you to record audio to your PC and play back audio from your PC through the mixer.
6. Specifications
| Attribute | Value |
|---|---|
| Brand Name | TEYUN |
| Model Number | A8 |
| Type | Mixers |
| Channels | 8 Channels (6 mono + 1 stereo) |
| Effects | 24 DSP effects |
| Sound Card Function | Yes |
| Bluetooth Function | Yes |
| USB Record & Play | Yes |
| +48V Phantom Power | Yes |
| PC Record & Play | Yes |
| USB Play Format | MP3, WMA, WAV, FLAC |
| Power Source | DC 5V 2A |
| Built-in Battery | No |
| Inbox Adaptor | Yes |
| Origin | Mainland China |
| Certification | CE |
| Dimensions (approx.) | 29 cm (11.42 in) x 23 cm (9.01 in) x 5.5 cm (2.67 in) |
7. Troubleshooting
- No Sound Output:
- Check all cable connections (inputs, outputs, power). Ensure all channel levels, main output level, and connected speaker/headphone volumes are turned up. Verify that the correct input source is selected and not muted.
- Microphone Not Working:
- Ensure the microphone is properly connected. If using a condenser microphone, verify that +48V phantom power is activated for its channel (channels 1-4 only). Check the microphone's own power source if it's a battery-powered type.
- Bluetooth Connection Issues:
- Make sure the mixer is in Bluetooth pairing mode ("BLUE" flashing). Ensure your device's Bluetooth is on and within range. Try forgetting the device on your phone and re-pairing.
- USB Recording/Playback Not Working:
- Ensure the USB stick is properly inserted and formatted (FAT32 is generally recommended). Check that the mixer is in the correct USB mode for recording or playback. The USB stick should contain compatible audio files (MP3, WMA, WAV, FLAC) for playback.
- Distorted Audio:
- Reduce the GAIN level on the input channel and the main output level. Check the PEAK indicator on channels; if it lights up frequently, the signal is too hot. Ensure connected speakers/amplifiers are not overdriven.
8. User Tips
- OS Compatibility: When connecting to a PC, the mixer functions as a standard USB audio device. It should be compatible with most operating systems, including Windows and macOS, without requiring special drivers.
- Gain Staging: Properly set the GAIN knob for each input channel to achieve a strong signal without clipping (avoiding the PEAK light). This ensures optimal sound quality.
- Effect Experimentation: Explore the 24 DSP effects to find the best sound for your vocals or instruments. Start with subtle effects and gradually increase the level.
9. Maintenance
- Cleaning: Use a soft, dry cloth to clean the surface of the mixer. Avoid using liquid cleaners or solvents, which may damage the finish or internal components.
- Storage: Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
- Handling: Avoid dropping or subjecting the mixer to strong impacts. Do not place heavy objects on top of the unit.
- Power Off: Always power off the mixer and disconnect it from the power source when not in use for extended periods or during electrical storms.
10. Warranty and Support
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please refer to your purchase documentation for specific warranty terms and duration. For technical support or service inquiries, please contact the retailer or manufacturer directly. Keep your proof of purchase for warranty claims.
