Review on π Nobsound Vacuum Amplifier Current Tester: Accurate Measurement for Audio Devices by Charles Fowler
Poor design is best in amplifiers
Probe test leads are too short to extend. Banana plugs have a lip that prevents them from being fully inserted into a few feet. This sensor measures the plate current of the vacuum tube (high side) which can be quite high in the 400-600V range. At this dangerous voltage, they must fully penetrate the meter and be long enough to reach the meter while standing next to it. I assume I'll have to modify the test leads myself, but that should actually work right away.
- Nice packaging
- High price
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