- High-Efficiency Class D Technology: Ensures over 90% power efficiency, reducing heat output and power consumption.
- Mono Channel Output: Dedicated single channel design for focused high-power applications (e.g., subwoofers, PA systems).
- Variable Power Output: Delivers 10W/15W/20W/30W depending on input voltage and load impedance.
- Wide Voltage Operation: Operates reliably from DC 10V to 30V (12V recommended for general use).
- Differential Audio Input: Features differential inputs for excellent noise rejection and a clean audio signal.
- Protection Features: Built-in protections including over-voltage, under-voltage, and output short-circuit protection.
- Compact Design: Small form factor facilitates integration into tight enclosures and various projects.
OEP30W Mono Class D Digital Amplifier Board – 12V High Power Audio Module (10W/15W/20W) with Differential Input, TDA8932 Based
| Amplifier Chip | TDA8932 (or equivalent high-performance chip) |
|---|---|
| Amplifier Type | Mono Class D Digital |
| Channels | 1 (Mono Channel) |
| Output Power | 10W/15W/20W (typical) up to 30W max |
| Input Voltage | DC 10V ~ 30V (12V recommended for 20W output) |
| Output Impedance | 4Ω ~ 8Ω (4Ω recommended for higher power) |
| Efficiency | >90% |
| Protection | Over/Under Voltage, Short Circuit |
| Dimensions | Approx. 35mm x 30mm |





- Power Connection: Connect a stable DC power source (10V-30V, at least 2A current recommended) to the power input terminals. Ensure correct polarity (positive/negative).
- Speaker Connection: Connect a single passive speaker (4Ω or 8Ω impedance) to the speaker output terminals (SPK+/-).
- Audio Input: Connect your audio source to the input pads. For differential input, connect the positive input signal to IN+, the negative input signal to IN-, and the ground to GND. This helps reject noise.
- Configuration: Note that the output power depends on the input voltage and speaker impedance. Use a 12V supply for typical 20W output, or higher voltage up to 30V for maximum power into a 4Ω load.
The differential input significantly improves noise immunity by focusing on the difference between the positive and negative input signals. This results in a cleaner, clearer audio output, especially useful in environments where electrical noise might interfere with the audio signal
Yes, the board is compatible with a 12V DC power source. At 12V, it can typically output around 20W into a 4Ω speaker
For optimal performance, a power supply capable of providing at least 2 Amps is recommended. If driving the amplifier to its full 30W capacity at higher voltages, a power supply rated for 3 Amps or higher might be necessary
No. As a high-efficiency Class D amplifier (>90% efficiency), it generates very little heat during operation, even at high output levels











