AJMRTC 2PCS TDA8932 Mono Digital Amplifier Board, 35W Class-D Low Power Consumption Audio Amplifier Module, BTL Output for DIY Stereo Speaker, Home Audio and Electronic Sound Projects

AJMRTC pack includes 2 pieces of TDA8932 mono digital amplifier boards, high-efficiency Class-D audio power modules designed for low-heat and low-power audio systems. Adopting BTL bridge-tied load architecture, each board outputs up to 35W mono power while maintaining high conversion efficiency above 90%, greatly reducing energy waste and heat generation compared with traditional analog AB amplifiers. Thanks to its low heat characteristics, it can run stably without an additional heat sink in most regular DIY scenarios.

The module accepts standard line-level audio input from MP3 players, preamps, Bluetooth audio receivers, PC sound cards and single-chip audio sources. Two modules can be paired easily to build a complete stereo left-right channel system, which is the most common usage for home speaker builds. It supports speaker loads from 4 to 8; 8 speakers are recommended to achieve the best sound quality and protection margin.

Integrated multi-layer protection circuits prevent burnout caused by shorted speaker wires, overload or abnormal operating temperature. Compact PCB layout saves space inside small speaker cabinets, portable sound boxes and embedded audio devices. It works stably with DC switching power supplies, lithium battery packs and vehicle power systems. The exposed terminals make soldering and wiring convenient for makers, students and audio hobbyists.

This dual-module set is perfect for stereo speaker DIY, active speaker retrofitting, portable audio projects, home background music systems and electronic experiment platforms. It is a cost-effective solution for anyone building compact low-power audio amplifiers.

Specifications

1. Brand: AJMRTC
2. Quantity: 2PCS
3. Chip: TDA8932
4. Amplifier Type: Class-D Digital Amp
5. Channel: Mono (each board)
6. Max Output Power: 35W per board
7. Circuit Mode: BTL Bridge Output
8. Supply Voltage: DC 10V30V (24V recommended)
9. Supported Speaker Impedance: 4 / 6 / 8
10. Efficiency: Up to 90%
11. Protection: Overheat, Over-current, Short Circuit Protection
12. Audio Input: Line Level Analog Input
13. Heat Sink: Not required for normal use
14. PCB Size: 45mm × 31mm
15. Application: DIY Stereo Speaker, Active Speaker Modification, Portable Audio, Home Audio, Electronic Experiment