ALL NOS tube and 100% test.

Reminder: Each board can serve one audio channel. For indication of two channels such as stereo, two boards are needed.

Tips: If there is no high voltage DC power supply, and buyers want to use high-voltage AC power supply transformer, the buyers need to increase the crystal diode bridge (or full-wave rectification), so you can work. (Method as the main photo shows)

Package Contents
1 x DC170-250V Magic Eye Tube 6E2 EM84 VU Meter Audio Level Indicator for Amp Signal