Works very well, its well built and makes biasing the power valves safer and accurate. ( I am a qualified electronic engineer. Biasing valve amp tubes is NOT something that should be attempted by the untrained or unqulified as there is a high risk of receiving a fatal electric shock). So I am very pleased with this probe. The components, socket , plugs, wires, switch, etc are all high quality and well assembled. The banana plugs fitted into my Fluke meter and getting a reading of the plate voltage and bias current was straight forward to do. The first amp I tested was running a little hot
Verified purchase: Yes
Very good apparatus for someone who knows what he's doing. I like the conception and smart thinking behind this tool. I've used it for me and my friends to balance and bias their amps and it worked fine. Doing exactly what it was sold for when you replace power tubes in a amplifier. Very please.
Verified purchase: Yes
Not much to say other than this product did exactly what it was supposed to do and it made biasing my amp a cinch.
Verified purchase: Yes
This item makes setting the bias on tube amps much easier.
Verified purchase: Yes
Perfect Tool for the intended use, everybody can use it if you know what you're doing.
Verified purchase: Yes