best tube

a 3W single ended EL84 amp for home, work & school

best tube

Postby audioray » Sun Jan 20, 2013 10:30 am

what is best tube for this unit. el84
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Re: best tube

Postby Shannon Parks » Sun Jan 20, 2013 11:05 am

AudioRay,
Actually, I'm happy with the standard 6p14p tubes. Since you are operating at lower voltages than the EL84 PP amps, you don't even have to worry about EV types either. But all the standard EL84 types (JJ, Sovtek, etc.) will work great.

Shannon
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Re: best tube

Postby MacL » Wed Mar 06, 2013 2:50 pm

Hi All,
New to the site.
I think I may try the budgie- coming from guitar tube amps to HI-FI.

RE: Tubes
Why no shield on the 12ax7?
Many questions to come.
Thanks,
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Re: best tube

Postby EWBrown » Wed Mar 06, 2013 8:42 pm

In this case, the 12AX7 is handling relatively high (approx 1 volt rms input) audio signal voltages, so the shielding isn't necessary, as it would be in a high-gain phono stage or guitar amp input stage, which is dealing with low-millivolt audio signals, and which would be much more susceptible to being influenced by external EM fields..

/edB
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