Descriptions:

It  is  safe  to  use,  durable.  
Lightweight  and  portable  to  taken  outside.

Features:

Especially  suitable  for  watching  movies  in  3D  effect  is  stronger.
It  is  safe  to  use,  durable.  
Lightweight  and  portable  to  taken  outside.
It  is  the  best  replacement  for  your  old,broken  one.
High-quality  and  cost-effective  exquisite  components  from  leading  manufacturers.
 

Specifications:

Product  model:  XH-A901
Input  voltage:  DC12-24V
Number  of  channels:  two  channels
Size:  96x39x20MM
Installation  aperture:  3MM
Installation  hole  distance:  89.3×32.3MM
Chip: Two  NE5532

Package  Included:

1 x    XH-A901  NE5532  Tone  Board  
1 x  3P  Audio  cable