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Alembic Club » Miscellaneous » Archive: 2006 » Archive through January 24, 2006 » F2-b tubes « Previous Next »

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Username: sharkey

Post Number: 9
Registered: 2-2004
Posted on Monday, January 23, 2006 - 2:49 pm:   Edit Post

Can anyone tell me what make of tube is used in the F2-b pre amp???
Username: mica

Post Number: 2996
Registered: 6-2000
Posted on Monday, January 23, 2006 - 4:05 pm:   Edit Post

12AX7. We are not loyal to any particular brand. We pick whichever 1) sounds good and 2) fits under the shielding sleeve.

If you're look at NOS tubes, look for 7025, they were the "good" 12AX7. However, now, all the 12AX7 makers are only making the 7025 version, so the distinction is only valid when looking at the old stuff.
Username: spose

Post Number: 90
Registered: 5-2002
Posted on Tuesday, January 24, 2006 - 6:06 am:   Edit Post

In my older F2B, I use a matched pair of the JJ/Tesla ECC83/12AX7 they are a Telefunken clone..and sound pretty good to me!

I also like the new Groove Tube Mullard clone..GT12AX7M. It also sounds good, but I prefer the JJ's.
Senior Member
Username: kmh364

Post Number: 1663
Registered: 9-2003
Posted on Tuesday, January 24, 2006 - 6:41 am:   Edit Post


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