ZK TB21 2.1-channel BT5.0 TPA3116D2 Digital Amplifier 50Wx2+100W Subwoofer-FA-

Features:\nHIFI Stereo, a high-quality two-channel amplifier board for HIFI music\nIt supports both AUX input and Bluetooth connection (BT5.0) for higher transmission efficiency and longer distance\nThe integrated high-performance processor chip is a Class D amplifier integrated circuit. The modulation frequency can reach 1.2MHz, and the distortion of high power output is less than 0.1%. Built-in LC filter capacitor, making the human voice clearer.\nBoth AUX and Bluetooth-compatible inputs are supported, supporting Bluetooth-compatible version 5.0.\nThe transmission distance is longer, up to 15 meters in outdoor environments. If your device does not have a Bluetooth-compatible module, you can also input audio signals through the 3.5mm headphone jack.\nProtection mechanism: The amplifier board has overheating protection, overvoltage protection, undervoltage protection, and short circuit protection\n\nSpecifications:\nItem: ZK-TB21 Amplifier Board\nChip: TPA3116D2\nInput voltage: DC12V-24V5A\nPower output: 50Wx2 (left and right channel) + 100W (subwoofer)\nChannel: 2.1-channel stereo output\nOutput impedance: 4-8\nBluetooth-compatible version: BT5.0\nLength: about 118 mm/4.65 inches\n\nNote:\nDue to problems with lighting effects and shooting angles, there will be certain tolerances in the product, please understand.\nPlease allow 0-1cm error due to manual measurement.\n\nPackage includes:\n1 set ZK-TB21 Amplifier Board