Features: 1. The power supply adopts a high-efficiency half-bridge power supply, with transfer switches suitable for global use, and the power supply margin is quite , and the ripple is lower than the traditional transformer power supply. 2. The power amplifier output also uses a MOS high-current tube output, which achieves a true 1% distortion of 350W(4Ohms), and the control is amazing. 3. The front stage adopts the current high- in the subwoofer industry, using dynamic EQ algorithm, high speed, low diving, and high control. A low-cut is also designed, which cuts all the frequency 20Hz, and converts the energy to the frequency range of 25Hz-60Hz, which makes people sound endless and full of energy. 4. In addition, this power amplifier board is also equipped with a phase-inverted subwoofer and a closed subwoofer switch, so that each subwoofer can achieve good results. The material is solid, with an aluminum back panel, and almost no bottom noise. It is a rare subwoofer power amplifier board for home theaters. Features: High-power cinema subwoofer High-power MOS tube, 350W real rated output power Fully sealed design, no need for compartment Half-bridge high-efficiency power supply Specifications: Rated power: 350W Output impedance: 4-8 Suitable for 10inch to 12inch subwoofer speakers Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, the , the Philippines, Taiwan and so on. voltage: AC110V Material: abs colour: As Shown Package Contents: 1 x Subwoofer amplifier board 1 plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.