Features: Adopts original TDA7498E dual-BTL power amplifier chip,high power. Equisite workmanship,it is very durable. Two-channel stereo,sound quality is very good. It has sufficient and high power output 2 x 160W. It supports BTL mode and when heat sink temperature rises to a certain extent,the cooling fan will work. Also can be vacant; temperature controlled forced air cooling. Specifications: Material: metal Working Voltage: DC 15-36V Output Power: 2 x 160W Number of Channels: Two-channel Stereo Efficiency: 85% Size: 109x79mm Color: multicolor Package included: 1 x Amplifier Board Notes: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation.Thanks