ZK-AS21 TPA3255 220WX2+350W 2.1 Bluetooth Dial Audio Power Amplifier Board High Low Tone Subwoofer Amplifier Module

Product selling point:1: Wide range of applications2: The appearance is simple and beautiful3: APP has comprehensive functions4: Real steple tuning, not dial 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.Product name: 2.1 bluetooth audio power amplifier moduleProduct Model: ZK-AS21Number of s: 2.1 s (left + right + subwoofer)Input method: AUX+Bluetooth+U disk+USB sound card (dial on to switch modes and songs)Bluetooth version: 5.1Power amplifier chip: TPA3255Adapter speakers: left and right s 30-220W, 3-8Ω subwoofer 30-350W 2-8ΩOutput power: left and right s ≤ 220w subwoofer ≤ 350WAdapter power supply: DC 16-38V, ≥10AProtection mechanism: anti-re connection, undervoltage, overheating, overcurrent, short circuit protection (automatic recovery, no need to restart)Switch mode: mechanical switch (no need to long pre and wait)Voltage gain: 30dBProduct weight: net weight 346g, including pack 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 e sure that the power of the adapted power supply is greater than the actual working power of the power amplifier!The package includes:1* 2.1 TPA3255 Bluetooth dial power amplifier board module