Which bias probe do you like?

[BABMusic]

I know I would get shocked if I had to connect something inside the amp guts, so I stick to the Eurotubes expensive probe.

 

[errrrrl]

I use the Weber Bias Rite. All four tubes at one time and plate voltage

Yup, thats what I got too...

 

[FourT6and2]

The Eurotubes Pro One. Yes, it only measures one tube at a time. But the benefit of this device over the others is that it measures current from inside the tube itself. You are seeing the actual plate current and NOT the plate current calculated by using Ohm's Law to measure voltage across a 1-ohm resistor. This means 1) it's more accurate because you eliminate variance and tolerance of a resistor and 2) you eliminate the error due to the current drop across the screen resistor.

It's worth the price. I have four of them just to make biasing faster/easier.

And no, you don't need the version that displays watts. You can simply use a calculator to determine your desired bias setting.

 

[napalmdeath]

I have (2) Eurotubes Pro Ones. They work great! Only need one most of the time, but the extra comes in handy when there's adjustments for each tube/pairs.

 

[ners]

Another +1 for Eurotubes Pro, though I only have one and use a generic socket probe + meter off Amazon for the second tube.

 

[Findthetone1]

Longtime user of the Weber Bias Rite here as well.

 

[PBGas]

I use one of the Tube Amp Doctor units with 4 sockets. Works great, no issues.