Product Description
XH-A902 compact audio preamplifier board adopts **original imported NE5532 operational amplifier chip** with **unique detachable IC socket design**, allowing you to easily replace different op-amp chips (such as OPA2604, LM4562) to experience various sound characteristics. It provides stable 5x signal gain, effectively boosting weak audio signals from mobile phones, computers and MP3 players to drive power amplifiers perfectly.
With ultra-low background noise, wide DC 12V-30V voltage input and ultra-compact size, it is the ideal choice for upgrading old audio systems, improving weak signal sources and various DIY audio projects.
Technical Specifications
- Model: XH-A902
- Main Chip: Original NE5532 (**detachable IC socket, replaceable**)
- Channels: 2.0 Stereo Dual Channel
- Fixed Gain: 5 times (14dB)
- Working Voltage: DC 12V-30V
- PCB Size: 50×30×15mm
- Mounting Hole Spacing: 43×23mm (hole diameter: 3mm)
- Net Weight: Approx 12g
- Feature: Ultra low noise, pure sound output
Core Advantages
✅ **Detachable IC socket design**: Unique advantage! Easily replace different op-amp chips to customize your sound signature
✅ **Original NE5532 chip**: Ultra low background noise, warm and natural sound quality
✅ **5x fixed gain**: Perfectly boosts weak audio signals to match all types of power amplifiers
✅ **Wide 12V-30V voltage input**: Compatible with various DC power supplies and 12V car electrical systems
✅ **Ultra compact size**: Only 50×30mm, easy to hide and install in limited spaces
✅ **Dual channel stereo design**: Suitable for all stereo audio systems
✅ **Plug and play**: Simple wiring, no complex setup or adjustment required
✅ **Lightweight design**: Only 12g, adds almost no weight to your device
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⚠️ CRITICAL IMPORTANT REMINDER (MUST READ)
**THIS IS AN AUDIO PREAMPLIFIER BOARD ONLY - IT CANNOT DRIVE SPEAKERS DIRECTLY!**
- You **MUST connect its output to a power amplifier board** to drive speakers
- It is used to amplify weak audio signals before sending them to the power amplifier
- **Power wiring note**: VCC is positive pole, GND is negative pole. Reverse connection will damage the board
Application Scenarios
- Boost weak audio signals from mobile phones, computers and MP3 players
- Upgrade old power amplifiers with insufficient input sensitivity
- DIY HIFI stereo systems and audio projects
- Car audio system signal amplification and improvement
- Portable audio device pre-amplification
- Professional audio equipment signal conditioning
- Electronic experiments and audio modification projects
Usage Notes
1. Use a stable DC 12V-30V power supply, do not exceed 30V
2. Strictly distinguish the positive and negative poles of the power supply (VCC=+, GND=-)
3. Use high-quality shielded audio cables to minimize signal interference
4. Always connect the preamp to the power amplifier first before powering on
5. Keep the board away from strong electromagnetic interference sources
6. When replacing op-amp chips, ensure correct pin alignment to avoid damage
Package List
1 × XH-A902 NE5532 Detachable Op-Amp Preamplifier Board
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