audio signal booster for 845 211 805 300B GM70 KT88 KT120 single ended SET tube amplifiers

[@travishein]

This is a very nice setup. I did not know about the Keithley 2015 THD and Audio Analysis Multimeter. Now I want that too :). But. It is really far out of my price range. But I am now inspired to try to learn how to do these measurements using the tools I have. Thank you for the video.

[@YoungAhn]

Glad it was helpful! Thank you.

[@lunallenalobo]

Nice and useful tip.
Maybe it's a bit difficult had a high voltage power supply

[@YoungAhn]

high voltage for 845 test is less than 500V. A little higher than KT88. thank u

[@АлексейРязанов-у7ф]

845.....211.....GM70......GK71

[@jdmccorful]

Nice setup.