1. Introduction
The SYNCO G2 A2 Pro / G2 A2 is an ultracompact 2.4GHz digital wireless microphone system designed for high-quality audio recording with mirrorless/DSLR cameras, smartphones, and other devices. It features Syncoder™ 4.0 technology for stable transmission and clear sound with noise cancellation. This manual provides detailed instructions for setting up, operating, and maintaining your wireless microphone system.

2. Package Contents
The SYNCO G2 A2 Pro and G2 A2 systems come with slightly different accessories. Please verify your specific model.
2.1 SYNCO G2 A2 Pro (with Charging Case)
- 2 x TX Transmitters
- 1 x RX Receiver
- 1 x Charging Case
- 2 x Mic Windshields
- 2 x External Lavalier Microphones (with Wind Muffs)
- 1 x 3.5mm TRRS Phone Cable
- 1 x 3.5mm TRS Camera Cable
- Optional: 1 x Android cable (Type-C to Type-C)
- Optional: 1 x iPhone cable (Type-C to Lightning)

2.2 SYNCO G2 A2 (without Charging Case)
- 2 x TX Transmitters
- 1 x RX Receiver
- 1 x Carrying Bag
- 2 x Mic Windshields
- 1 x Eject Pin
- 1 x 3-in-1 Charging Cable
- 2 x External Lavalier Microphones (with Wind Muffs)
- 1 x 3.5mm TRRS Phone Cable
- 1 x 3.5mm TRS Camera Cable
- Optional: 1 x Android cable (Type-C to Type-C)
- Optional: 1 x iPhone cable (Type-C to Lightning)
3. Device Overview
Familiarize yourself with the components of your SYNCO G2 A2 Pro / G2 A2 system.

3.1 Receiver (RX) Display
- Recording Mode: Mono/Stereo indicator
- Power Indicator: Battery level of the receiver
- Channel A/B Gain: Audio gain level for each channel
- Channel A & Channel B: Indicators for active channels
- Audio Dynamic Display: Visual representation of audio levels
3.2 Transmitter (TX) Display
- Recording Indicator: Shows when recording is active
- Muting Indicator: Shows when the microphone is muted
- Power Indicator: Battery level of the transmitter
- Low Cut On: Indicates if the low-cut filter is active
- Connection Status: Disconnected, Connecting, Connected
- Audio Dynamic Display: Visual representation of audio levels
4. Setup
4.1 Charging the Devices
Before first use, fully charge all units. For G2 A2 Pro, place the transmitters and receiver into the charging case. For G2 A2, use the 3-in-1 charging cable to charge the units simultaneously.
- Charging Time: Approximately 1.5 hours for a full charge (individual units).
- Charging Case: The G2 A2 Pro charging case can provide up to 24 hours of total working time.

4.2 Powering On/Off
Press and hold the power button on each Transmitter (TX) and Receiver (RX) unit for a few seconds to power them on or off.
4.3 Automatic Pairing
The SYNCO G2 A2 Pro / G2 A2 system is designed for automatic pairing. Once powered on, the transmitters and receiver should automatically connect. The connection status will be displayed on the TFT screens.

4.4 Manual Pairing (If Needed)
If automatic pairing fails, refer to the device's specific instructions for manual pairing, usually involving a reset button or a combination of button presses.
4.5 Connecting to Recording Devices
The receiver features a 3.5mm TRS audio output for versatile compatibility.
- For Smartphones: Use the provided 3.5mm TRRS Phone Cable. For iPhones without a 3.5mm jack, a Lightning to 3.5mm adapter (not included) is required. For Android phones with USB-C, a Type-C to 3.5mm adapter (not included) is required.
- For Cameras/Camcorders/Laptops: Use the provided 3.5mm TRS Camera Cable.
- For GoPro: A USB Sound Card (not included) may be required for connection.

4.6 Using the Lavalier Microphone
The transmitters have an inbuilt microphone. For a more discreet setup or improved audio quality, connect the external lavalier microphone to the 3.5mm input jack on the Transmitter (TX) unit. Ensure the lavalier mic is securely clipped to clothing, approximately 6-8 inches from the speaker's mouth.
5. Operating Instructions
5.1 Gain Control
The receiver features a gain control with 0-5 levels (0 to 30dB) to adjust the audio input sensitivity. Rotate the gain knob on the receiver to increase or decrease the audio level as needed. Monitor the audio dynamic display on the RX screen to prevent clipping (audio distortion) or excessively low levels.

5.2 Low Cut Filter
The 150Hz low-cut filter can be activated on the transmitter to reduce unwanted low-frequency noises such as wind, air conditioning hum, or traffic. This helps in producing clearer audio, especially in outdoor or noisy environments.

5.3 Real-Time Monitoring
Connect headphones to the 3.5mm TRS headphone jack on the receiver to monitor your audio in real-time. This allows you to check the sound quality and make adjustments during recording.

5.4 Muting Function
Press the mute button on the transmitter to temporarily silence the microphone. The muting indicator on the TX screen will light up when active. Press again to unmute.

5.5 Recording Modes (Mono/Stereo)
The receiver supports both mono and stereo output modes. The selected mode will be displayed on the RX screen. In stereo mode, the audio from each transmitter (TX1 and TX2) is recorded on separate left and right channels, allowing for individual post-production control. In mono mode, both transmitters' audio is mixed into a single channel.
5.6 Safety Channel Mode
The system includes an upgraded safety channel mode to prevent sound blasting and howling. This feature records a secondary audio track at -6dB, providing a backup in case the main track clips.

6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the units. Avoid using harsh chemicals or solvents.
- Storage: Store the microphone system in its carrying bag or charging case in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the units frequently. Charge them regularly, even if not in use for extended periods.
- Windshields: Regularly clean or replace the mic windshields to maintain optimal audio quality and prevent debris buildup.
7. Troubleshooting
7.1 No Audio or Low Audio Level
- Ensure all units are powered on and properly paired.
- Check the gain level on the receiver and adjust as necessary.
- Verify that the cables are securely connected to both the receiver and your recording device.
- Confirm that the transmitter is not muted.
- Check the battery levels of both transmitters and receiver.
- Ensure the recording device's input volume is set correctly.
7.2 Signal Interference or Dropouts
- Ensure there is a clear line-of-sight between the transmitter and receiver.
- Avoid obstacles like walls, large metal objects, or dense crowds.
- Move away from other 2.4GHz wireless devices (Wi-Fi routers, other wireless microphones) that might cause interference.
- Reduce the distance between the transmitter and receiver.

7.3 Pairing Issues
- Power cycle both the transmitter and receiver.
- Attempt manual pairing if automatic pairing fails. Refer to the device's specific instructions for manual pairing.
7.4 Battery Not Charging
- Ensure the charging cable is properly connected to a power source and the device.
- If using the charging case, ensure the case itself is charged.
- Try a different charging cable or power adapter.
8. Specifications
| Feature | Specification |
|---|---|
| Wireless Transmission | Digital 2.4GHz |
| RF Frequency Band | 2400-2483.5MHz |
| Working Distance (LOS) | Up to 492ft / 150m |
| Working Distance (NLOS) | Up to 164ft / 50m |
| Latency | <5ms |
| Audio Input | 3.5mm TRS Mic Input |
| Power Requirements | 5V 1A |
| TX Battery Type | Built-in Lithium Battery, 400mAh |
| RX Battery Type | Built-in Lithium Battery, 400mAh |
| TX/RX Battery Life | Up to 8 hours |
| Display | TFT Color Screen |
| Dimensions (TX/RX) | 52 x 42 x 16mm |
| Weight (TX/RX) | 39g |
| RX Gain | 0-6 Level (0 to 30dB) |
| Audio Output | 3.5mm TRS Mic Output, 3.5mm Headphone Output |
| Charging Case Battery | 3400mAh |
| Charging Case Charging Time | 3.5 hours |
| Charging Case Power Input | Type-C |
| Microphone Type | Condenser Microphone |
| Polar Pattern | Cardioid |
| Frequency Response | 20Hz-20KHz |
| Sensitivity | -40dB (±3dB) re 1V/Pa at 1KHz |
| Max SPL | 120dB SPL at 1KHz |
| Certification | CE |

9. User Tips
- Optimal Placement: For the best audio quality, position the lavalier microphone approximately 6-8 inches below the speaker's chin.
- Line-of-Sight: Always try to maintain a clear line-of-sight between the transmitter and receiver to ensure the most stable wireless connection and maximum range.
- Pre-Recording Check: Before starting any important recording, perform a quick sound check by monitoring the audio through headphones to ensure levels are correct and there's no unwanted noise.
- Low-Cut Filter Usage: Activate the 150Hz low-cut filter when recording in environments with noticeable low-frequency rumble (e.g., wind, traffic, air conditioning) to improve vocal clarity.
- Safety Channel: Utilize the safety channel feature for critical recordings to have a -6dB backup track, preventing audio clipping in unexpected loud moments.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact SYNCO customer support directly through their official website or the retailer where you purchased the product. Keep your proof of purchase for warranty claims.