Music Audio Power Amplifier: DIY modified USB/ HIFI audio power amplifier. MP3 Card Reader withHeat Dissipation: Designed for long time service, large area aluminum plate is used for great heat-dissipation. Fan Cooling System: Adding fans for quick heat dissipation and stable transmission. Adopt 4 D998 high amplifier tubes to high power output, the sound quality is good. Annular High-Power: Using annular 200W power for beautiful sound quality; Equipped with 2 large electrolytic capacitors for better filtering and stronger bass. Model :F06 (2.0/ Normal version) Rated power: 4 ohm /200W (recommended for pushing 5-8 inch speakers) The factory batches are different. If there are slight differences in some accessories, it does not affect the use of the product. : 400 w Power Amplifier Type: HIFI Power Amplifier Frequency response: 20HZ~21KHZ Adapter Type: US Interface Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage: AC110V Colour:Photo Color Material:plastic Package Contents: 1 x DIY Audio Power Amplifier Board 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.