Key benefits Reliable audio output at common low voltages: runs on DC 3.7–5V, so it integrates easily with singlecell Li‑ion batteries (3.7V) or standard 5V supplies. Clear 5W output for both stereo and mono setups: delivers usable volume for small speakers and compact audio systems without complex amplification. Low power consumption with anti‑jamming protection: reduces interference and conserves battery life for longer operation in portable applications. What it does and why it helps Function: provides clean audio amplification at a fixed 5W rating, usable in either stereo or mono configurations depending on system wiring. Problem solved: minimizes audio dropouts and interference with anti‑jamming features while keeping energy demands low, simplifying design choices for batterypowered or USB‑powered devices. Standout combination: the unit's anti‑jamming capability paired with low power draw and compatibility with 3.7–5V supplies makes it well suited for compact, energy‑sensitive audio projects. Compatibility and performance Voltage: DC 3.7–5V — compatible with single‑cell Li‑ion batteries, 3.7V battery packs, and common 5V power sources. Power: stereo/mono 5W — suitable for small speakers, enclosures, and embedded audio modules. Performance: designed to maintain audio quality under lowvoltage operation while resisting electromagnetic interference. Practical applications Portable Bluetooth or FM speaker: pair with a single‑cell Li‑ion battery and a Bluetooth module to build a compact, low‑power speaker. Embedded projects with Raspberry Pi, Arduino, or microcontroller boards: use with a 5V supply to add reliable audio output to DIY electronics. Small intercoms, alarm speakers, and kiosk audio: provides consistent 5W output with reduced interference for clear voice or alert playback. What to expect Straightforward integration into lowvoltage systems without additional ‑voltage supplies. Stable audio delivery for small enclosures and portable setups. Energy efficiency that helps extend battery run time while maintaining resistance to signal interference.