D3 2.1-Channel Digital Subwoofer Amplifier — Bluetooth Version 5.0, Multiple Modes

Built with an integrated feedback architecture and proprietary high-speed gate driver error correction (PurePath Ultra HD), this amplifier maintains ultra-low distortion across the entire frequency band for clear, high-fidelity sound. The main filter uses imported electrolytic capacitors to provide strong, continuous power support. A special red-gray ring high-current inductor is employed to ensure the sound is powerful. The PCB is a 1.6mm thick double-sided board with 2.0oz copper and a full tin-spraying finish, guaranteeing reliable passage of both large and small currents. The unit is housed in an all-aluminum chassis whose surface receives a brushed oxidation coloring treatment for durability and a refined appearance.