Features 1、100% new high quality, quality guaranteed. 2、Using high-quality materials, fine workmanship, sturdiness and durability. 3、With thermal shutdown, current limiting protection. 4、Power is great, ensuring minimal transmission distortion. 5、Easy to install. Specification Features: 100% new high quality, quality guaranteed. Using high-quality materials, fine workmanship, sturdiness and durability. With thermal shutdown, current limiting protection. Power is great, ensuring minimal transmission distortion. Easy to install. Specifications: Left and right channels: TDA2030Ax2 - Peak power: 18Wx2 - Horn: Recommended 2.5-4in 4-8 Euro 10-30W full-range speaker. Bass output: TDA2030Ax1 - Peak power: 30W - Horn: Recommended 5-8in, 4-8 Euro 30-50W woofers are recommended. Power supply: AC dual AC9-15V transformer Output power: DC 12V 1.5A PCB material: FR-4 glass fiber board Thickness: 1.6mm PCB size: - Motherboard: Approx. 80 * 65mm / 3.1 * 2.5in - Tone board: Approx. 80 * 20mm / 3.1 * 0.7in Potentiometer: - Center distance between shafts: 28mm - Shaft diameter: 6mm Packing List: 1 * DIY Parts Package Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List