Product Description
ZK-502T high-performance stereo amplifier board adopts original TI TPA3116D2 chip with **built-in AM interference suppression technology**, delivering clear and stable sound quality without background noise. It features **independent treble and bass tone adjustment** (unique advantage over basic amplifier boards), allowing you to customize sound effects according to your preferences.
Supports Bluetooth 5.0 and 3.5mm AUX dual input modes, with wide DC 9V-24V voltage input range. Equipped with 5 comprehensive protection mechanisms, ensuring safe and stable long-term operation. Perfect for DIY HIFI speakers, desktop audio systems, car audio modification and home theater projects.
*For more details, please refer to product pictures or contact our customer service directly.*
Technical Specifications
- Model: ZK-502T
- Main Chip: TI TPA3116D2 (with AM interference suppression)
- Bluetooth Version: 5.0
- Bluetooth Transmission Distance: Up to 10 meters (unobstructed, no shielding)
- SNR: >90dB
- Input Modes: Bluetooth 5.0 / 3.5mm AUX
- Channels: 2.0 Stereo
- Power Supply: DC 9V-24V (recommended ≥2A current; higher voltage for higher power output)
- Supported Speakers: 15W-100W, 4Ω-8Ω
- Protection Mechanisms: Overvoltage protection / Undervoltage protection / Overheat protection / DC detection / Short circuit protection
- Product Size: 110×70×21mm (4.33×2.76×0.83 inch)
- Package Weight: 154g (0.34 lb)
Core Advantages
✅ **Independent tone control**: Adjust treble and bass separately to customize your favorite sound effects
✅ **Original TI TPA3116D2 chip**: Built-in AM interference suppression, no background noise
✅ **Bluetooth 5.0 technology**: Stable connection, fast transmission and low latency
✅ **Dual input modes**: Bluetooth wireless + 3.5mm AUX wired, compatible with all audio sources
✅ **5 comprehensive protection mechanisms**: All-round protection for the module and speakers
✅ **Wide 9V-24V voltage input**: Compatible with 12V/19V/24V common power adapters
✅ **High power output**: Up to 50W×2 at 24V/4Ω, sufficient for most audio applications
✅ **Compact size with solid build quality**: Easy to install in various audio enclosures
⚠️ IMPORTANT POWER OUTPUT NOTE
To achieve the rated output power, please ensure:
1. **Sufficient audio input signal**
2. **Adequate power supply voltage and current**
3. **Matched speaker impedance**
**Key Rules**:
- The higher the power supply voltage, the greater the output power
- The lower the speaker impedance, the greater the output power
- **The power of your power adapter must be greater than the actual working power of the amplifier**
Application Scenarios
- DIY HIFI bookshelf and floor-standing speakers
- High-quality desktop audio systems
- Car audio modification and upgrade
- Home theater satellite speaker systems
- Portable Bluetooth speakers
- Old audio system wireless upgrade
Usage Notes
1. Always connect speakers first before powering on the amplifier board
2. Use a stable DC power supply with sufficient current capacity
3. Do not exceed 24V input voltage to avoid damaging the module
4. Never short circuit the speaker output terminals to each other or to ground
5. Ensure proper ventilation around the board for optimal heat dissipation
Package List
1 × ZK-502T TPA3116D2 Bluetooth 5.0 Stereo Amplifier Board with Tone Control
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