Model: B4003 — 1pc TPA3116D2 Audio Power Tone Op Amps 1224V DualChannel Stereo 2 x 80W Digital Amplifier Board Why choose this board Delivers power stereo sound in a compact, readytouse module. Built around the TPA3116D2 amplifier IC, the board provides digital classD amplification with integrated tone op amps for basic tone control and signal conditioning. Operates from a 12–24V DC supply to suit a variety of power sources and installations. Rated output 2 x 80W for applications that need strong, clear output without a large external amplifier. Key benefits Simple integration: a complete dualchannel stereo amplifier board that reduces time and complexity when building or upgrading audio systems. Flexible power range: runs from 12V to 24V, making it suitable for common desktop, automotive, and small PA power supplies. Tone control: builtin tone op amps allow you to adjust brightness or warmth before the power stage, improving system tuning and listener satisfaction. Costeffective: a single board solution to add power amplification to existing audio projects. Main features and attributes Amplifier IC: TPA3116D2 (digital classD). Channel configuration: dualchannel stereo. Maximum output: 2 x 80W (as specified). Supply voltage: 12–24V DC. Form factor: singleboard amplifier module (1pc). Model: B4003. Functionality: tone op amps for preamplification/tone control plus power amplification stage. Compatibility and use Power: accepts 12–24V DC input; compatible with common DC supplies used in desktop audio, automotive, and portable systems. Speakers and systems: designed to be used as the main power amplifier stage in stereo setups. (Refer to your speaker and power supply specifications to ensure matching impedance and adequate supply current.) Integration: suitable for DIY audio projects, replacement amplifier modules, compact stereo installations, and custom speaker systems. Typical use cases Bookshelf or desktop speaker upgrade: or supplement a small integrated amplifier with this board to improve output power and allow tone adjustment. Portable or vehicle audio projects: add power stereo amplification to mobile audio builds that run on 12V or 24V systems. DIY PA or hobbyist audio systems: drive passive speakers in small venues or practice spaces where a compact, powerful amplifier module is needed. What to check before use Ensure the power supply can deliver the required voltage (12–24V) and sufficient current for your speaker load and desired output level. Match speaker requirements with amplifier output ratings to avoid damage. Follow safe wiring practices and secure mounting to prevent shorts or mechanical damage. Professional, compact, and ready to integrate, the B4003 1pc TPA3116D2 digital amplifier board provides a practical solution when you need a power, dualchannel stereo amplifier with tone control in a single module.