Class D 2.0 Channel 50Wx2 HiFi Stereo Digital Amplifier — Adjustable Volume & Tone, Easy Installation

Durable zinc alloy shell with a corrosion-resistant, antioxidant finish houses a high-fidelity 2.0 dual-channel amplifier designed for clear, spacious sound and immersive listening. Power is delivered by a high-performance Class D TPA3116D2 chip with up to 1.2MHZ modulation frequency to preserve accurate signal transmission. Wireless connectivity uses a V5.4 BT chip for stable Bluetooth links up to 15 meters; the circuit also incorporates two NR5532 dual operational amplifiers for improved audio fidelity. Protection is comprehensive — quadruple protection includes over-voltage, under-voltage, overheating and DC detection circuit safeguards. Inputs are flexible: three selectable modes (BT, U disk, AUX) and an RCA input port to separate audio and video transmission. Physical controls include independent volume plus dedicated treble, midrange and bass knobs for on-the-fly tone shaping. Designed for straightforward installation and everyday Hi‑Fi use.