The main filter capacitor uses the old 470UF/25V, and the coupling capacitor uses the imported capacitor 1UF.The resistor uses a high-precision chip resistor to ensure a good signal-to-noise ratio.PCB uses 1.6mm thick double-sided sheet, 2.0 oz copper thickness, spray tin full process, to ensure good passing performance of large and small current. First-class PCB quality.Input and output with gold-plated RCA lotus seat, durable and beautiful!The board layout is reasonable, beautiful, and the current is smallMaximum Power Per Channel: NO POWERModel Number: 6J5Power supply: DC12V 2ANote: The parts in different batches will be differentcolour:BlueMaterial:plasticsize: length 133 x width 89 x height 22MM (without tube height)Package Contents:1 x Home Audio Tube AmplifierOnly the above package content, other products are not included.Note: Light shooting 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.