Fangrui Product Details Op Amp Chip: 4 Ne5532 Frequency Division Structure: Linkwitz-rayleigh Filter Signal Input: Two-channel 2.0 Stereo Input Frequency Division Slope: 12db/oct 12db (2nd Oroder) Audio Output: 6-channel Output (treble Left And Right Channels, Midrange Left And Right Channels, Bass Left And Right Channels) Capacitor Type: Correction Capacitor Resistor Type: High-precision Metal Film Resistor Filtering Structure: High-pass Filtering, Low-pass Filtering, Band-pass Filtering Power Supply: Dual Power Transformer 9-12v, Be Careful Not To Exceed 12v25w (use Preamplifier A Small Transformer Like Used For The Module Is Sufficient, Do Not Use A Large Transformer) Module Size: 99mm X 96mm X 19mm (length, Width And Height) 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 Not Affect The Use. Material: Pcb Colour: Black Package Contents: 1 * Speaker Crossover Filter Divider Only The Above