F2-b tubes

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Author Message sharkey New Username: sharkey Post Number: 9 Registered: 2-2004 Posted on Monday, January 23, 2006 - 2:49 pm:    Can anyone tell me what make of tube is used in the F2-b pre amp??? mica Moderator Username: mica Post Number: 2996 Registered: 6-2000 Posted on Monday, January 23, 2006 - 4:05 pm:    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. spose Member Username: spose Post Number: 90 Registered: 5-2002 Posted on Tuesday, January 24, 2006 - 6:06 am:    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. kmh364 Senior Member Username: kmh364 Post Number: 1663 Registered: 9-2003 Posted on Tuesday, January 24, 2006 - 6:41 am:    http://alembic.com/club/messages/393/22979.html?1134056488