Model 502MT Bluetooth Audio Power Amplifier Module (1pc) 9–24V | 50W x 2 | Tone Control | AUX + Bluetooth Input | 2Channel Subwoofer Amplifier Board Why this module matters Adds reliable, power Bluetooth and AUX input to speakers or audio projects without replacing existing hardware. Delivers two independent 50W channels to drive stereo speakers or a compact sub/satellite setup, improving volume and clarity. Builtin tone control lets you shape bass and treble for better matching to speakers and room acoustics. Key benefits Simple Bluetooth pairing for wireless audio playback from phones, tablets, and other Bluetooth sources. AUX input for wired sources or legacy devices. Wide operating voltage (9–24V DC) for flexible installation in cars, boats, portable systems, or desktop projects. Twochannel design suitable for stereo speakers or subwoofer/satellite configurations. Main features and attributes Model: 502MT Power: 50W x 2 channels Inputs: Bluetooth audio and AUX (wired) input Controls: Tone control (adjust treble/bass) Power supply: Operates from 9 to 24 volts DC Form: Single amplifier board module (1pc) Compatibility and use Works with Bluetoothenabled devices (smartphones, tablets, laptops) and any source with an AUX output. Compatible with 9–24V DC power sources, making it suitable for 12V automotive systems and 24V installations. Suggested applications Car audio upgrade: Add Bluetooth streaming and extra amplifier power to factory or aftermarket speaker systems without replacing the head unit. DIY home or desktop audio projects: Use the module to drive bookshelf speakers, a small subwoofer system, or desktop multimedia speakers with improved power and tone control. Portable/boat audio: Integrate into batterypowered or vehiclebased audio systems where compact, output amplification and wireless input are needed. What you get and how it solves problems A compact amplifier board that brings modern wireless input and substantial power to older or lowpowered speakers. Eliminates the need for a separate Bluetooth receiver and amplifier by combining both functions on one board. Tone control gives quick tuning onsite so audio sounds better without complex equalization. Practical notes Requires a 9–24V DC power source; ensure connections and power capacity match the intended speakers and use case. Designed as a 2channel amplifier board with Bluetooth and AUX inputs and integrated tone control; install and secure the board in a suitable enclosure or mounting location for safe operation. This 502MT 50WX2 Bluetooth amplifier module is a straightforward solution for adding wireless streaming, reliable power, and tone shaping to a variety of audio setups.