PCB Size: 170x60mm
Power Supply: AC12V 500mA
With 2pcs 6J1 Tube (can be replaced by 6AK5 etc)
Connect to the transformer and work
Function and advantages: Connecting it between digital audio sources such as VCD, CD, DVD, and optical drive and power amplifier can greatly reduce the "digital taste" and "transistor sound", making the whole audio system a sweet and natural taste"
Package: 1pc 6J1 Pre-AMP Board