Made of high-quality double-sided panels, simple and beautiful, with reasonable wiring, this module has a very high signal-to-noise ratio and good anti-interference ability.Voltage:AC 9V-12VPower: 10W dual power transformerAudio input: two-channel stereo inputAudio output: Continuously adjustable subwoofer outputFrequency division point: 59Hz -- 234Hz continuously adjustablePCB module size:89x83x28 mmModule weight: 79 gramsThis module is a subwoofer processing circuit with continuously adjustable crossover points, that is, a low-pass filter. The output end is connected to an ordinary pure power amplifier to form a subwoofer amplifier. The input can be one channel or two channels. channel stereo, very flexible and convenient to use, and a transformer with very small circuit power consumption is enough.Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.Colour:BlackMaterial:PCBPackage Contents:1 x Bass Crossover Board