Op amp chip: 4 NE5532<br> Frequency division structure: Linkwitz-Rayleigh filter<br> Signal input: two-channel 2.0 stereo input<br> Frequency division slope: 12dB/Oct 12dB (2nd oroder)<br> Audio output: 6-channel output (treble left and right channels, midrange left and right channels, bass left and right channels)<br> Capacitor type: Correction capacitor<br> Resistor type: high-precision metal film resistor<br> Filtering structure: high-pass filtering, low-pass filtering, band-pass filtering<br> Power supply: dual power former 9-12V, be careful not to exceed 12V25W (use preamplifier<br> A small former like the one used for the module is sufficient, do not use a large former)<br> Module size: 99mm x 96mm x 19mm (length, width and height)<br> Module weight: 73 grams<br> Default crossover: (treble 3288Hz midrange 328Hz bass)<br> Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.<br> Material: PCB<br> colour: Black<br> Package Contents:<br> 1 * Speaker Crossover Filter Divider<br> Only the above package content, other products are not included.<br> 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.