-----------------------1/2 UL (Ultra Linear) means only one Output tube is connected to UL terminal.
9GV8 pp amp is used as a Demo unit.
In order to succeed this project, "The Best OPT" should be used.
Otherwise, you will end up with a mediocre PP amp. I am highly recommending R-core OPT. My OPT is described here.
This 1/2 UL Amp puts out very pure 2nd harmonic Rich sound which you have never experienced before.
Make sure you are getting a very Low standard UL pp THD value - at least 0.1% @ 1W.
"Very low THD"( low 3rd harmonic contents) in standard UL mode assures purer 2nd harmonic Rich out put;
The THD in standard mode shown could be better.
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아래는 소리가좋다는 엘에이님의 작품입니다
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