Features: Brand new and high quality With power 200W output. It adopts high-efficiency half-bridge power supply, with 120V and 230V transfer switches for global use. And its power supply margin is quite large, lower than that of traditional power supply. The power amplifier output also uses high-current tubes output, which achieves 1% distortion of 200W, and the control is amazing. The front stage adopts the current in the subwoofer industry, using dynamic algorithm, high speed, low diving, and high control. A low-cut is also designed, which cuts all the frequency belows 18Hz, and converts the energy to the frequency ranges of 25Hz-60Hz, which makes people sound and full of energy. This board uses an aluminum back panel, there being no noise level. Perfect for home theaters. Specifications: Material:Plastic+PCB Type:EU/US Power: 200W 300W Input voltage: 120-240VAC Suitable impedance: 4-8Ω Suitable for speakers: 8-12 inches Package Includes: 1x Subwoofer Amplifier Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.