Description: _x000D_ High quality filter power supply. The four pins of rectifier respectively in parallel connect with decoupling capacitor, which can effectively eliminate the high frequency interference of AC power grid. Now the clutter interference of power grid is very small and the voltage is quite stable. So the item has better performance.The chip has high conversion rate and strong drive ability. The frequency band is wide and noise is very small. _x000D_ _x000D_ _x000D_ Features: _x000D_ 1, Power supply circuit adopts full bridge rectifier. _x000D_ 2, Effectively eliminate the high frequency interference of AC power grid. _x000D_ 3, Chip has high conversion rate and strong drive ability. _x000D_ 4, Better performance,noise is very small. _x000D_ 5,Sound warm and distorted, high fidelity _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Working Voltage: AC double 12-18V _x000D_ tune type: Low/Middle/High Pitch/Volume _x000D_ Channel: Double channel _x000D_ Audio Input: RCA sockets_x000D_ Audio Output: 3P terminal_x000D_ Input Voltage: 3P terminal_x000D_ _x000D_ Size: 105 mm x 54 mm _x000D_ Weight: 75g _x000D_ _x000D_ _x000D_ Package includes:_x000D_ 1 x HIFI Preamplifier Control Board Module _x000D_ _x000D_ _x000D_ Note: _x000D_ 1, Please allow 1-3 mm error due to manual measurement. Thanks for your understanding._x000D_ _x000D_ 2, Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.