ZK-AS21 TPA3251 21 Channel Bluetooth 50 Digital Amplifier Board Module High-low Tone Subwoofer 220W*2+350W
Functions 1 Wide range of applications2 The appearance is simple and beautiful3 APP has comprehensive functions4 Real stepless tuning not digital multi stage grading adjustment 5 The mechanical switch can be turned off with one turn no need to wait for a long time which is convenient and fast Feature Number of channels 2 1 channels left channel right channel subwoofer Input method AUX Bluetooth U disk USB sound card dial button to switch modes and songs Bluetooth version 5 1Power amplifier chip TPA3251D2Adapter speakers left and right channels 30 220W 3 8Ω subwoofer 30 350W 2 8ΩOutput power left and right channels ≤ 220w subwoofer ≤ 350WAdapter power supply DC 12 38v ≥10AProtection mechanism anti reverse connection undervoltage overheating overcurrent short circuit protection automatic recovery no need to restart Switch mode mechanical switch no need to long press and wait Voltage gain 30dBProduct weight net weight 346g including packaging 408gProduct size 141 131 27mmTip Only when the audio signal input is large enough and the power supply voltage current is large enough will there be enough output power The higher the power supply voltage the greater the output power and the smaller the speaker impedance the greater the output power Please make sure that the power of the adapted power supply is greater than the actual working power of the power amplifier Package includes 1 x 2 1 channel TPA3251 Bluetooth digital power amplifier board