We will send you Class A latest version now , and the sound quality will be much better than the old version
New design bluetooth adapter
work voltage :
AC6.3V--AC18V 1.5A, DC8.0V--DC24V 1.5A, if the current exceeds 1.5A,
The voltage above AV15V DC18V must be reduced to less than 1A. The higher the voltage, the smaller the current used, and the high voltage will burn the board .