Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Type: Module _x005f_x000D_ Condition: New _x005f_x000D_ Product model: XH-M173 _x005f_x000D_ Chip model: PT2399 _x005f_x000D_ Output load: requires a rear power amplifier board _x005f_x000D_ Power supply: AC dual 12V _x005f_x000D_ Net weight of product: 65 grams _x005f_x000D_ Size: 100x56x16mm/3.93x2.20x0.62inch _x005f_x000D_ Precautions for use: _x005f_x000D_ 1. The power supply adopts AC dual 12V transformers. _x005f_x000D_ The audio output part of the board needs to be connected to the power amplifier board, not the audio system. _x005f_x000D_ 3. Regarding screaming, all karaoke products now scream when the microphone is close to the speaker. Therefore, do not place the microphone near the speaker. _x005f_x000D_ Application: _x005f_x000D_ 1. Connect the input terminal to a dual AC 12V power supply, and it is recommended to use a ring zero transformer. _x005f_x000D_ 2. Connect the audio input panel to the audio source, such as a phone, computer, MP3 player, etc. _x005f_x000D_ 3. Connect the audio output terminal to the input end of the rear amplifier, and connect the amplifier to the speaker. _x005f_x000D_ 4. Connect the microphone connector to the dynamic microphone (note: it must be a dynamic microphone). After all connections are completed, turn on the power and sound source to use. _x005f_x000D_ 5. There are four controls in the reverb board, which are "music volume, microphone volume, and reverb depth". When in use, clockwise rotation increases and counterclockwise rotation decreases. _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x XH-M173 PT2399 Power Amplifier Board 1. Microphone Input: XH-M173 PT2399 power amplifier board features a microphone input interface that allows for the connection of an external microphone, serving as a receiver of sound signals. 2. Amplification and Gain Control: XH-M173 amplifier board is designed with an in-built audio amplification circuit, capable of amplifying the received sound signals for enhanced audio output. 3. Noise Filtration: Microphone amplifier board has noise filtering capabilities, reducing the impact of background noise and interference on the audio signal, thus providing clearer, cleaner sound output. 4. Power Protection: Reverberation board includes a power protection feature, which identifies and addresses excessively high or low power inputs to safeguard the module and the audio equipment it's connected to. 5. Compact Size: Digital audio amplifier's compact size makes it convenient for installation and integration into a variety of audio applications.