1pc TPA3251 Power HiFi Digital Amplifier Board — AP2202 (Red) Bring power, clean sound to your DIY audio projects and installs with this TPA3251based digital amplifier board. Designed for demanding listening environments, the AP2202 (Red) offers flexible output options and a compact board layout so you can build powerful stereo systems or a bridgedmono subwoofer amplifier without bulky external amplifiers. Key benefits output power for demanding speakers: Delivers up to 220W per channel in stereo or 350W in bridged mode to drive higherpower passive speakers with authority. HiFigrade digital amplification: Uses the TPA3251 digital amplifier platform to provide clear, dynamic audio suitable for music, movies, and live sound reinforcement. Spacesaving, integrationfriendly board: Compact red AP2202 PCB is ready to fit into custom enclosures or retrofit projects, simplifying system assembly. Flexible operation to suit your needs: Choose stereo mode for twochannel listening or bridge channels for a single power output to feed a subwoofer or mono PA driver. What it does and why it matters Solves the problem of insufficient amplifier power: If your passive speakers need more clean wattage for fullrange performance or deeper bass, this board supplies significantly higher continuous output than many small amplifiers. Streamlines DIY and retrofit projects: Eliminates the need to source separate amplifier modules when you want power capability in a compact package. Preserves audio detail at volumes: Designed for power HiFi applications where clarity, headroom, and transient response matter. Key attributes Model and chipset: TPA3251 digital amplifierbased board, model AP2202 (Red). Output performance: Stereo mode — 220W × 2; Bridge mode — 350W total (as specified). Quantity: 1pc. Appearance: Red PCB finish for easy identification and professional look. Intended use: power HiFi and pro audio applications where a compact digital amplifier board is required. Compatibility and requirements Works with passive speaker systems that can accept the listed power levels (220W per channel in stereo; 350W in bridged mono). Requires an appropriate power supply and proper wiring for safe, reliable operation. Ensure speaker impedance and power supply capacity match your intended configuration. Integration into an enclosure may require heat dissipation measures and correct electrical connections. Typical use cases power bookshelf or tower speakers: Populate a pair of passive HiFi speakers with a compact, powerful amplifier board to upgrade home listening systems. Bridged subwoofer application: Switch to bridged mode to create a single power channel for a subwoofer in a home theater or proaudio setup. DIY PA or studio monitor builds: Use the board in custom speaker projects where continuous power and compact footprint are priorities. What to consider before Confirm speaker impedance and powerhandling match the amplifier outputs. Plan for an adequate power supply and thermal management (ventilation or heatsinking) when installing in an enclosure. Follow proper wiring and safety practices during installation to ensure reliable performance. This 1pc TPA3251 Power HiFi Digital Amplifier Board AP2202 (Red) provides a practical, output solution for DIY audio enthusiasts, installers, and anyone building compact, performance speaker systems.