ขาย YJ0072- 6J1 tube preamp board luxury upgrade board ราคาที่ดีที่สุด

product details: Using 6J1 tube The main filter capacitor is 2200UF/63V, and the coupling capacitor is 1UF. The resistor uses a five-ring 1% metal resistor to ensure a good signal-to-noise ratio. The PCB adopts 1.6mm thick double-sided sheet, 2.0 oz copper thickness, and the whole process of tin-spraying ensures the good passing performance of the current. First-class PCB quality. The input and output are made of gold-plated RCA lotus seat, which is durable and beautiful! The board layout is reasonable, beautiful, and the current is small. This 6J1 bile pre-level luxury upgrade board, the circuit is modified by the X10-D music fax bile buffer, which is 10% higher than the original more stable tube. Basic parameters:    Voltage: AC12V-0-AC12V (15W)    The size of the finished board: board length 100MM board width 90MM height 56MM