Black Diitao 50W2 100W Bluetooth Power Amplifier Board With Subwoofer, 12V-24V When you have a retro high-grade plug-in subwoofer at home, you can match this ZK-MT21Bluetooth power amplifier board, so you can have a high-grade retro bluetooth subwoofer! Specification ZK-MT21 Bluetooth power amplifier board parameters Model: ZK-MT21 Bluetooth Version: 5.0 (Without occlusion 49 Feet) Audio Input: AUX + Bluetooth Channel: 2.1 Stereo Adaption Supply Voltage: 12-24V / 5A above Speaker: 20-100W, 4-8Ohm Output Power: max 50W RandL channel; max 100W subwoofer Protection Mechanism: Anti reverse connection, overheating, overcurrent, short circuit protection The antenna can be directly welded, or the antenna base can be welded NOTE: Please note that this product does not include a power supply, you need to equip it with a DC power supply. It is recommended to use a DC power supply within 20V. If you use a battery pack to supply power, make sure that the battery voltage is lower than the rated voltage when the battery is fully charged. Package includes: 1 ZK-MT21 circuit board 1Top cover 1lower cover 4Support copper column 5Silver knob cap 9M23 screws 1Screwdriver 1DC adapter (All parts are packed in a beautiful carton, you need to DIY a ZK-MT21 Bluetooth power amplifier board by yourself) Product Features- 【ZK-MT21 Power Amplifier Board】Uses Bluetooth 5.0, and its transmission distance can reach 49 feet (without obstruction). At the same time, this power amplifier board has a 3.5mm AUX audio input interface.
- 【Specification】With 36*25*10mm heat sink, suitable for power supply DC12-24V/5A or above (24V battery pack cannot be connected), suitable for speakers 20~100W, 4~8Ω.
- 【Protection Function】ZK-MT21 Bluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has short-circuit protection, over-current, over-heat, and anti-reverse protection.
- 【Come With DC Conversion Plug】The DC adapters on the market (plug specification 5.5mm*2.1mm) basically can meet the needs of the ZK-MT21 Bluetooth power amplifier board. If your existing DC power plug is not 5.5mm*2.1mm, there is no The problem is because we have included a DC conversion plug in the product.
- 【Tips】There will be enough output power only when the audio input is sufficient and the power supply voltage/current is sufficient.The higher the power supply voltage, the greater the output power, 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 power of the power amplifier!
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