Enhance your audio experience with this advanced Audio Power Amplifier Board, designed for superior sound control and versatile connectivity. Featuring Bluetooth 5.0 technology, this amplifier ensures a stable and long-range wireless connection up to 33 feet in open environments. The dual-channel stereo output delivers powerful, high-fidelity sound with minimal distortion (THD ≤ 0.1%), making it perfect for a wide range of speaker systems from 20W to 200W and impedance between 4 to 8 ohms. Key Features: · Bluetooth 5.0 Wireless Connectivity: Provides an extended transmission distance of up to 33 feet, ensuring seamless audio streaming without interruptions. · Dual Stereo Channel Output: Delivers crisp and clear stereo sound with continuous high-power operation, supported by the TPA3116D2 power amplifier chip with AM interference suppression for enhanced audio quality. · Adjustable Treble and Bass Controls: Customize your sound profile easily with dedicated control knobs, allowing you to enjoy a theater-like audio experience tailored to your preferences. · Multiple Input Modes: Supports both Bluetooth wireless input and a 3.5mm AUX input jack, offering flexible compatibility with a variety of playback devices, including those without Bluetooth capability. · Wide Voltage Input Range: Operates efficiently on DC 12-24V power supply with a recommended current of 5A or higher; higher voltage inputs deliver increased output power to suit different speaker configurations. · Robust Safety Protections: Equipped with comprehensive protection mechanisms including overvoltage, undervoltage, overheat, DC detection, and short circuit protection to ensure reliable and safe operation. · High Signal-to-Noise Ratio: Maintains a signal-to-noise ratio greater than 90dB, ensuring clean and distortion-free audio output for an immersive listening experience. Specifications: · Item Type: Audio Power Amplifier Board · Material: PCB · Bluetooth Version: 5.0 (unobstructed range up to 10m/33ft) · Signal to Noise Ratio: >90dB · Input Mode: AUX and Bluetooth · Number of Channels: Left and right dual channel (stereo) · Power Amplifier Chip: TPA3116D2 with AM interference suppression · Power Supply: DC 12-24V, minimum 5A (higher voltage increases output power) · Applicable Speakers: 20-200W, 4-8Ω impedance · Output Power:  - 2 x 20W at 12V, 8Ω  - 2 x 35W at 12V, 4Ω  - 2 x 35W at 19V, 8Ω  - 2 x 60W at 19V, 4Ω  - 2 x 50W at 24V, 8Ω  - 2 x 100W at 24V, 4Ω · Protection Mechanism: Overvoltage, undervoltage, overheat, DC detection, short circuit protection Package Includes: · 1 x Audio Power Amplifier Board This Audio Power Amplifier Board combines advanced Bluetooth technology, customizable sound control, and comprehensive safety features to deliver exceptional audio performance. Its wide voltage compatibility and dual input options make it an ideal choice for upgrading your home audio system or DIY speaker projects with reliable and powerful stereo sound.