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Dual tester worked great, biasing a new set of 6L6GC tubes. You will still need to manually obtain cathode-plate voltage and calculate conversion formula (included); Unit AB switch allows single multimeter use providing mV conversion of current draw, so you can determine your optimal bias point. Overall, it's a quality product. Delivery was quick as well. Reliable vendor.
Verified purchase: Yes | Condition: New
This tool is indispensable in getting your bias settings right, fast and easy. Make sure to measure plate voltage and then look up the recomemnded bias for the voltage against the Jim Jones Bias Bible.
Verified purchase: Yes | Condition: New
This tool is easy to use and is very accurate. It measures the voltage-mv- across 1 ohm in series with pin 8 of an octal socket. That measurement is directly converted to ma.
Verified purchase: Yes
Didn't quite give me what I was looking for. Seems to work fine but unless you are well versed in reading and adjusting bias, leave it to the guys at the shop!
Verified purchase: Yes | Condition: New
The Dual Bias testing probe is a great tool for biasing the power tubes that I have on hand. Being able to bias both tubes at a time really saves time. It works as advertised.
Verified purchase: Yes | Condition: New