1. Introduction
The XY-T30L is a versatile Bluetooth 5.1 digital power amplifier board designed for stereo audio applications. It features dual-channel output, high and low-frequency adjustments, and supports multiple audio input methods including Bluetooth, AUX, USB drive, and USB sound card. This amplifier board offers a 360° stepless tuning knob for precise volume control and is compatible with the Xinyi Lian APP for enhanced control and customization.
Figure 1: XY-T30L Amplifier Board with key features highlighted.
Figure 2: Summary of XY-T30L features including Bluetooth 5.1, Treble/Bass tuning, AUX, USB audio, HIFI, and EQ user-defined capabilities.
2. Safety Information
- Ensure the power supply voltage is within the specified range (DC 9-24V/3A or above).
- When using 4-ohm impedance speakers, the power supply voltage must not exceed 12V.
- When using 8-ohm impedance speakers, the power supply voltage must not exceed 24V.
- Avoid short circuits and overvoltage/undervoltage conditions to prevent damage to the device.
- Do not expose the device to moisture or extreme temperatures.
- Keep out of reach of children.
3. Package Contents
The following items are included in your package:
- XY-T30L Amplifier Board Module (with heat sink pre-installed) x 1
- Accessory Kit (Knob caps, M2*4+3mm screws, M2*3 screws, M2*14mm standoffs, DC plug, screwdriver) x 1
Figure 3: Contents of the XY-T30L package, including the amplifier board and accessory kit.
4. Specifications
Figure 4: Detailed dimensions and specifications of the XY-T30L amplifier board.
| Parameter | Value |
|---|---|
| Product Model | XY-T30L |
| Product Name | Stereo Bluetooth Audio Amplifier Board |
| Bluetooth Version | 5.1 |
| Power Supply | DC 9-24V/3A or above |
| Audio Output | Stereo/2.0 |
| Audio Input | Bluetooth + AUX + USB drive + USB sound card |
| Frequency Range | 20Hz - 20KHz |
| Audio Adjustment | Independent adjustment of high and low frequencies |
| Volume Adjustment | High quality encoder knob 360° stepless tuning |
| Decoding Format (USB flash drive) | WAV FLAC APE MP3 |
| Output Power | 20W*2 @ 4Ω/12VDC, 10W*2 @ 8Ω/12VDC, 30W*2 @ 4Ω/15VDC, 30W*2 @ 8Ω/24VDC |
| Protection Mechanism | Overvoltage, undervoltage, clipping, short circuit, overheating |
| Featured Function | Supports control via Xinyi Lian APP |
| Product Size | 64mm x 72mm x 22mm |
| Product Weight | 95g |
5. Setup and Installation
5.1 Wiring Connections
Refer to the diagram below for basic wiring connections. Ensure all connections are secure before applying power.
Figure 5: Basic wiring diagram showing connections for left/right speakers, DC power, USB flash disk, and AUX input.
- Power Input: Connect a DC 9-24V/3A or above power supply to the 5.5-2.5/2.1mm DC jack.
- Speaker Output: Connect your left and right speakers to the 'SPEAKERS' terminals. Pay attention to polarity (R+ R- for right channel, L+ L- for left channel).
- AUX Input: Connect an external audio source via a 3.5mm AUX cable to the 'AUX IN' port.
- USB Drive: Insert a USB flash drive into the 'USB' port for local music playback.
5.2 Antenna Connection
The amplifier board features a first-generation IPEX interface for connecting the Bluetooth antenna. Ensure the antenna is securely connected for optimal Bluetooth range and stability.
Figure 6: Location of the IPEX interface for connecting the external Bluetooth antenna.
6. Operating Instructions
6.1 Power On/Off and Mode Switching
The master volume knob (rightmost) controls power and mode:
- Long Press: Power ON/OFF.
- Single Click: Play/Pause (in Bluetooth or USB drive mode).
- Double Click: Next track (in Bluetooth or USB drive mode).
- Triple Click: Switch between input modes (Bluetooth / AUX / USB flash drive / USB sound card).
Figure 7: Explanation of the master volume knob's multi-functional controls.
6.2 Bluetooth Connection
- Ensure the amplifier board is powered on and in Bluetooth mode (triple-click master volume knob if not).
- On your mobile device, turn on Bluetooth and search for available devices.
- Select 'XYV122V30UE' (or similar, as the name can be changed via APP) from the list to connect.
- Once connected, you can play audio from your device through the amplifier.
Figure 8: Visual guide for Bluetooth connection, showing device search and pairing.
6.3 AUX Input
Connect your audio source to the 'AUX IN' port using a 3.5mm audio cable. Switch the amplifier to AUX mode by triple-clicking the master volume knob until the AUX input is active.
6.4 USB Drive Playback
Insert a USB flash drive containing WAV, FLAC, APE, or MP3 audio files into the 'USB' port. Switch the amplifier to USB drive mode by triple-clicking the master volume knob. The amplifier will automatically play music from the drive.
6.5 USB Sound Card Mode
Connect the amplifier board to a computer via the USB port. The amplifier can function as an external sound card for your computer. Switch to USB sound card mode by triple-clicking the master volume knob.
6.6 Volume and Tone Control
- Master Volume (VOL): The rightmost knob controls the overall volume. Turn clockwise to increase, counter-clockwise to decrease.
- Treble (TRE): The leftmost knob adjusts the high frequencies.
- Bass (BASS): The middle knob adjusts the low frequencies.
6.7 APP Control (Xinyi Lian)
The amplifier supports control via the Xinyi Lian APP, available for both Android and iOS devices. The APP allows for advanced features such as:
- Changing the Bluetooth name.
- Setting a Bluetooth password.
- Enabling/disabling prompt tones.
- User-defined EQ settings.
- Displaying the USB flash drive music list.
Figure 9: Screenshot of the Sinilink APP interface, showing options for customization and control.
7. Troubleshooting
- No Sound: Check power connections, speaker wiring, and ensure the correct input mode is selected. Verify volume levels on both the amplifier and the audio source.
- Bluetooth Disconnection: Ensure the amplifier and your device are within range. Check for interference from other wireless devices. Re-pair the device if necessary.
- USB Drive Not Playing: Ensure the USB drive is formatted correctly (FAT32 recommended) and contains supported audio formats (WAV, FLAC, APE, MP3).
- Distorted Audio: Reduce the volume on both the amplifier and the audio source. Check speaker impedance compatibility with the power supply voltage (refer to Safety Information).
- APP Connection Issues: Ensure Bluetooth is enabled and the amplifier is discoverable. Restart the APP and try connecting again.
8. User Tips
- For best audio quality, use high-quality audio cables and speakers.
- Experiment with the treble and bass adjustments to find your preferred sound profile.
- Keep the amplifier in a well-ventilated area to prevent overheating, especially during prolonged use at high volumes.
- Utilize the Xinyi Lian APP for advanced customization and convenience.
9. Maintenance
- Clean the amplifier board regularly with a soft, dry cloth.
- Do not use liquid cleaners or solvents.
- Ensure no dust or debris accumulates in the ports or on the components.
10. Warranty and Support
For warranty information and technical support, please refer to the seller's policies or contact the point of purchase. Keep your purchase receipt as proof of purchase.
