Fosi Audio BT30D Amplifier Power Amplifier Sound Amplifier SUB Adjustment High Performance TPA3116D2 Chip Stereo Audio Amplifier Channel Small Class D

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ---------------------------------------------------------------------- [Upgraded Bluetooth 5.0 Amplifier] Equipped with 2.1CH Bluetooth 5.0, compared to commercially available Bluetooth 4.2, it increases transmission efficiency during music playback and extends transmission distance. It provides warm and soft sound output, greatly improving the sound field and sound quality. A great mini audio component amplifier for your home audio stereo system. 【TPA3116D2 Chip with Superior Sound Quality】TPA3116D2 is a class d amplifier from Texas Instruments. It features a wide voltage input range, high efficiency, and no need for filters. Its efficiency can reach more than 92%, ensuring THD less than 0.1% even during long-term high-power operation. 【SUB Volume/Frequency Adjustment】Supporting Bluetooth and RCA input, BT30D can drive most home passive speakers, passive/powered subwoofers. Designed with SUB volume/frequency adjustment button, you can adjust it specifically for the subwoofer according to your preference, ensuring the quality of Hi-Fi music. [Mini but powerful] Supports Bluetooth5.0 input (input mode indicator lights blue) and RCA input (input mode indicator lights red). 50W*2+100W output can be used for home/outdoor passive speakers/subwoofers. 【24 Months Warranty】Includes FosiAudioBT30D amplifier, 24V/4.5A power supply, user's manual, and 24 months warranty. We value your experience above all else, so if you have any problems with the product, please feel free to contact us by clicking "Contact Seller" in your order history. Note: ① If the Subout output port does not work, please check whether the RCA cable is firmly connected, whether the subwoofer's volume and frequency response settings are correct, and whether the subwoofer itself is working properly. ② If the power does not turn on, please check that the power cord is connected correctly and not loose, and that the socket is working properly. ③ If the sound balance between the left and right channels is poor, and the sound on one side is not output or is low, please check whether the connection cable between the amplifier and the speaker is firmly inserted. Check and adjust the left and right channel balance settings on your sound source device. Test with a good speaker or cable to ensure the speaker is working properly. Power adapter: 24 V / 4.5 A DC input range: 12 - 24 V THD: ≤ 0.04%, SNR: ≥ 98dB Frequency range: 20 Hz-20kHz (±1 dB) Input sensitivity ≤ 280mV; Termination impedance: 2 - 8 Ohm Maximum output: 50W+100W Input mode: Bluetooth and RCA Bluetooth Transmission Distance: Up to 50 Ft Package Includes: BT30D Amplifier x1, Power Supply x1, User Manual x1