December 16, 200817 yr Author comment_185145 One RCA (Mullard) EL34 says "Xf4 B5J1" and the other says "Xf4 B602" upsidedown. Report
December 16, 200817 yr comment_185173 Ahhh ok... The XF4's are the last of the Mullard EL34's and not as good as the rest but no slouch though. They are worth less though. Report
December 16, 200817 yr comment_185200 I wish I had a squid to hold my tubes. For a minute, I thought this was a technical term for something. Report
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