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5AR4/ GZ34 Substitutes
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April 24th, 2012, 08:37 AM
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BobbyZ
Friend of Leo's
Join Date: Jan 2011
Location: Nimrod MN
Posts: 4,354
What's the amp ?
If it's say a vintage AC30 then don't be cheap buy a Mullard !
Some amps need a big rectifier like a GZ34 but most will work fine with 5R4s or 5v4s.
A few can use a 5u4 if the OT will handle the heater current.
BobbyZ
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