1. The Heat Sink Is Made Of Aluminum Alloy Oversized Heat Sink, Which Is Beautiful And Fast In Heat Dissipation. 2. It Is An Intimate Partner Of Heating-Grade Chips. 3. Chip Inductors Filter Noise, Filter Signals, Stabilize Current, And Suppress Electromagnetic Interference. 4. The Function Switch Adjusts The Volume And Turns The Amplifier On Or Off. 5. Heating Capacitor Symmetrical Capacitor Design 8 Heating Capacitors 330uf * 8 = 2640uf Product Name: Audio Amplifier Board Frequency Response: 20HZ-20KHZ Product Model: TDA7498 Output Power: 2x100W Function Type: Audio Amplification Output Channel: Dual Channel Chip Type: TDA7498 Output Impedance: 4-8ohm Installation Size: About 76.6x57.6mm Protection Function: Short Circuit, Overheating And Reverse Connection Of Power Supply Installation Hole Diameter: About 3mm Power Supply Voltage: DC12V-36V Standby Current: 60mA Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use. Colour:As Shown Material:PCB Size:About 83x64x28mm Package Contents: 1 * Amplifier Board Module Only the above package content, other products are not included. 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.