Specifications:
Product model: XH-A901
Input voltage: DC12-24V
Number of channels: two channels
Size: 96*39*20MM
Installation aperture: 3MM
Installation hole distance: 89.3*32.3MM
Chip: Two NE5532

Package Included:
1 x XH-A901 NE5532 Amplifier Tone Board Preamp Pre-amp With treble bass volume adjustment
Instructions/schematic are NOT included. We don't provide technical assistance please make sure that you are familiar with the product before purchasing.