Features: 1. Wide application fields. Automotive electronics, network communication, security equipment, medical electronics, measuring instruments, smart home, household appliances, lighting electronics, 3C digital, radio and television education, wearable devices, new energy, Internet of Things IoT. 2. 2.0 channel 2*15W high power mini digital power amplifier board adopts TPA. 3. 3110 power amplifier chip. The chip does not require a heat dissipation sink. It has over-current and over-heat protection. It is very powerful. 4. It is designed with the improved standard circuit of the official release. The power supply anti-back protection and the new design low-pass filter are added, and the bass thrust is stronger. 5. Does not have any interference sound. No special shielding is required. Specifications: Amplifier chip: TPA3110 Output power: 15W x 2 Working current: Max3A, static: 8mA Efficiency: ≥90% SNR: 100 decibels Frequency range: 20Hz-20KHz Speaker: 4-8Ω Size: Approx. 4*3.5*0.2cm/1.57*1.38*0.08in Package List: 1 * TPA3110