User's Manual

Chaozhou TongHeng Technology Co., Limited
Address: Ruixiang Street(M.Section), Huayuan Development Area, Xiangqiao District, Chaozhou City, Guangdong
Province, China 521000
Tel: [phone] Fax: [phone]
User Manual
Model: MA-900
FCC ID: 2AR6Z-TH217942
Please read the manual carefully before using.
Technical data
1. RMS Power @ 4 Ohm：20W×4CH
2. THD @ 4 Ohm：<0.2%
3. Frequency response：20Hz ~ 20KHz ± 1dB
4. Input sensitivity low level input：0.25~2V
5. S/N ratio (+A)：> 85 dB
6. Stereo separation (+A)：> 80 Db:
7. Power requirements：DC12, 5A Max
8. Bluetooth V5.0 Frequency: 2402-2480MHz
9. FM Receiver 87.5MHz-108MHz
Caution
1. Be sure to read carefully and keep this manual.
2. Please keep in sealing completely and packing sound when storage and transportation.
3. Before using, put the machine on a solid surface.
4. Openings seam slot is for airing, avoid case of overheating in parts, Do not cover or jam.
5. Before connecting the power, please make sure the device input voltage value is DC12 V,
5A.
6. Connecting DC12V power supply, the LED display bright (POWER), indicating that the
machine turn on the POWER, please shut off (POWER) when shutdown.
7. Please protect the power cord, ensure it won't be trampled or other may lead to appear
suddenly loses power of accidents, And don't piled up any object on the power line.
8. Please pay attention to the manual mentioned all attention and warnings.
9. Shall not take any liquid into the device, otherwise, it will have a serious damage or
leakage.
10. Do not have any changes or amendment to this equipment. If the equipment have any
abnormalities, please look for professional handling.
11. Please don't take this device in or stored in environmental which the temperature is over
60 celsius degree, otherwise, it will cause damage to equipment.