1. TB 21 Class D Amplifier Board 200 Watts. Original IC (IC Model = TPA 3116 D2). High-speed cooling fan used, so no chance of the IC overheating. 2. 8-inch Subwoofer 100 Watts. 3. 6-inch Woofer Speaker 50 Watts (2 units) with large magnets. 4. Tweeter. 5. Body: MDF Board 18mm. 6. Foam installed inside. 7. Height 45 inches, front-to-back 12 inches. 8. Weight 18 kg. 9. Adapter 19.5 Volt MPR 4.6.