ITEM NAME:HiFi 6J1 Tube Preamplifier Amplifier Board Class A Pre Amp Crystal Shell LJ HiFi 6J1 Tube Preamplifier Amplifier Board Class A Pre Amp Crystal Shell - YouTube Video will open in a new window Using the.Adopt A1013, C2383 triode power amplifier, 6J1 electron tube. 2 × 6J1 Tube. This preamplifier is not amplifier, should work with Active Speaker or power amplifier. 1 × Assembly preamplifier board. Crystal shell.
