> There seems to be some disagreement on different sites about the best
> mods to incorporate into this amplifier, specifically regarding
> self-oscillation of the 3-500z tubes.
?????????????? The SB-220 is a stable, well behaved amplifier.
Read QST Sept. 1994 page 71 before you do anything. Oh, there are things you
might want to do,
but be sure you read that section as a part of your knowledge base.
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