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Old 02-15-2009, 09:16 PM   #1
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Anyone tried a 5F4 preamp with a long-tailed PI?

Just curious how it sounds. Any surprises?

Thanks, Skip
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Old 09-04-2009, 07:44 AM   #2
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Would be nice to know, since I'm planing to build a two channel amp where the first channel is a 6G11 circuit. For the second channel I'm torn between the 6G3 or 5F4.
I'd tend to think the 5F4 with a long tail PI would sound similar to a 5F6-A Bassman.
I also think that the amp would lose some of it's earlier breakup because of the missing half 12AX7 before the PI (original circuit).
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