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 large, 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-tech 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 below 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: 4-8Ω Suitable for 10inch to 12inch subwoofer speakers Plug Type: EU Plug, it applies to Indonesia, Germany, France, Spain, Italy and so on. voltage: AC220V 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.