Specifications: Original original Beijing 6N1 tube Electrolytic capacitor use Nikon and South Korea three camps electrolytic coupling capacitor Siemens, output using SPIRIT 2.7UF, to ensure strong support for a steady stream of power. PCB using 1.6mm thick sheet double-sided, 2.0 oz copper thickness, HASL whole process to ensure that the size of the current have a good performance. First-class quality. Parameter: Voltage: Dual AC3.15 or single AC6.3V (20W) AC160V (15W) two voltage Potentiometer function: from left to right : 1.volume ,2.treble, 3. bass PCB size：139*170MM Package Content: 1pc 6N1 tube tone board preamplifier completed board
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