• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
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    the safety precautions around high voltages.

Preamp Tube MU Level?

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Einric

Einric

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Joined 2011
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I have been VERY happy with my newly completed Aikido.
I chose to build mine with 300V B+ and now I am looking for some "Fancy" tubes.
I see the 12AU7 & 12AV7 are happy with 300V B+ but the MU values are different than my 6CG7's.
6CG7's have about MU 21.8, the 12AU7 MU 18.1 & the 12AX7 MU 100.

What differences would I notice with the different MU values?
They all seem to have about the same I/O gain levels.
 
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