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The core of this power amplifier board is the original imported. TDA7297 two-channel power amplifier chip. The power supply is designed to be. DC power supply, which can be directly powered by a 12V battery. The voltage range: 9-15V, the recommended voltage is 12V, the output power is up to 15W+15W, and the peak power is up to 30W+ 30W, the volume is small but the sound is super shocking, suitable for any occasion. Product parameters. Product advantages. No current impact sound when booting, high fidelity without static noise! The sound quality is super good - the treble is delicate, soft, transparent, without obvious harshness; the bass is strong, full, powerful, and freely retractable. Recently, a small number of customers reported that the board is a little noisy, mostly because the power supply problem has not been solved. After testing, there is no noise at all when powered by a battery above 12V2A or a transformer above 12V30W. If a switching power supply or other variable power supply is used for power supply, low noise may occur due to poor linearity.
