Op amp chip: 4 NE5532 Frequency division structure: Linkwitz-Rayleigh filter Signal input: two-channel 2.0 stereo input Frequency division slope: 12dB/Oct (2nd order) Audio output: 6-channel output (treble left and right, midrange left and right, bass left and right) Capacitor type: Correction capacitor Resistor type: high-precision metal film resistor Filtering structure: high-pass, low-pass, band-pass filtering Power supply: dual power supply 9-12V, do not exceed 12V 25W (use preamplifier) A small power adapter like the one used for the module is sufficient; do not use a large adapter Module size: 99mm x 96mm x 19mm (L x W x H) Module weight: 73 grams Default crossover: treble 3288Hz, midrange 328Hz, bass Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect functionality Material: PCB Color: Black Package Contents: 1 x Speaker Crossover Filter Divider Only the above package content is included; other products are not included Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. Measurement error allowed is +/- 1-3cm