+- Tube Amp Forum: The Ultimate Tone (https://theultimatetone.com)
+-- Forum: Tube Amp Community (Hi-fi too!) (https://theultimatetone.com/Forum-Tube-Amp-Community-Hi-fi-too)
+--- Forum: TUT Q&A (https://theultimatetone.com/Forum-TUT-Q-A)
+--- Thread: Preamp tube voltage ratings (/Thread-Preamp-tube-voltage-ratings)
Preamp tube voltage ratings - K O'Connor - 08-22-2018
Hi Guys
Despite the fact TUT has been out since 1995, people still ask about the 300V rating for 12AX7 and similar preamp tubes.
12AX7 has a flash-over rating in excess of 540V.
The reason for the 300V rating is to accommodate the flyback voltage with an inductive load, such as a transformer feeding the next stage.
Have fun
RE: Preamp tube voltage ratings - nauta - 09-10-2018
(09-04-2018, 04:04 PM)Test User 1 Wrote: Just a test post from Test User 1.What voltage rating do YOU have
That's interesting about the preamp tubes. My marshall has more than 300V at the preamp and splitter - more like 450 or something. Good to know the tubes can survive.