Features: Adopting M65831AP and NE5532 The mainfiltering capacitors adopts 2 3300UF and adopts 5A and above rectification to ensure a continuous power supports. SMTresistors ensures a goodsignal-to-noiseratio for the entire machine. The PCBadopt1.6mm thick double-side sheet metal, with a thickness of 2.0Acopper and a full process of tinsprayings, ensuring good performances in passing large and small current. Preamplifier tone board have reasonable circuit board layouts, small noise, beautiful component layouts. Better performances,noise is very small. Specifications: Material:ABS Input voltage: AC12V-15V Size:Approx.117.5mm/4.63'x68mm/2.68' Package Includes: 1x NE5532 Preamplifier note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.