2Pcs TPA3116D2 Digital Amplifier Board, 2x50W Dual Channel Amp Board | Class D Audio Board, High Power Digital Stereo Power Amp Module, Subwoofer Amplifier DIY Board for Home Theater & Speakers

Supply Voltage: DC4.5_26V(24V Recommend)Frequency response range:14-100KHz0utput power:2x50WSignal-to-noise ratio:100dbOutput load:4-8Ohm(Recommend)Switching frequency:1.2MHz

• TPA3116D2 Chip: Built with a genuine high-performanceTPA3116D2 chip, paired with high-performance inductors and capacitors. Delivers stable 2 x 50W power output with low distortion and excellent dynamic sound quality, perfect for stereo and subwoofer setups.
• Flexible Power Supply: Supports a wide operating voltage range of DC 4.5V to 26V (24V recommended), featuring reverse connection protection to eliminate damage from incorrect wiring. Optimized for 4-8 Ohm speakers, it's ideal for bookshelf speakers, passive subwoofers, and DIY audio projects.
• Complete Fail-Safe Protection: Built-in comprehensive safety system, including over-voltage, under-voltage, short-circuit, thermal, and DC output protection. Ensures stable long-term operation and completely prevents catastrophic failure of the amplifier board and connected speakers.
• Hi-Fi Acoustic Performance: Achieves an outstanding signal-to-noise ratio of up to 100dB, a wide frequency response range of 14Hz-100kHz, and a 1.2MHz switching frequency. It reproduces clear treble, rich mids, and punchy deep bass for a premium listening experience.
• Wide Application: Compact and highly efficient design suitable for store solicitation systems, home theater audio, square dance speakers, DIY Bluetooth speaker modification, and small-scale public address systems. An excellent balance of superior performance and cost-effectiveness for hobbyists and professionals. (Note: This is a bare amplifier board, basic soldering/assembly and a power supply are required.)