ITEM NAME:TDA7498 2x100W Digital Power Amplifier Board Class D Dual Audio Stereo Description: High power class D digital amplifier. Two-channel stereo, 2x100W power output. Applicable speaker impedance: 4/6/8 ohm(8 ohm is the best). Sound quality is very good and it can drive 4/6/8 ohm speakers. Short-circuit protection and over temperature protection. Specification: Material: metal Size: 110*70*10mm/3.61*2.30*0.33inch Package Includes: 1 Piece TDA7498 Digital Power Amplifier. Note: Recommended power supply: 24V output , 5A or above..1 Piece TDA7498 Digital Power Amplifier. Two-channel stereo, 2x100W power output. High power class D digital amplifier. Sound quality is very good and it can drive 4/6/8 ohm speakers. People always bought together with.