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The board uses a high-performance digital amplifier TDA8932 chip£¬ a small size£¬ high efficiency£¬ high power£¬ good sound quality£¬ without additional installation of radiator£¬ very suitable for the transformation of active speakers£¬ electro-acoustic project implementation£¬ product development and other audio applications. Product Description: Operating voltage: single DC10 ~ 30V£¬ 24V recommended voltage£¬ current above 2A Switching Power Supply Output power: 35W * 1 Speaker Impedance: 4-8 ohm£¬ 8 ohm best Circuit configuration: Mono BTL output PCB board size: 45 * 31MM