5AR4 substitutes

Info for maintaining and tweaking your amp to perfection.

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dynaman
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5AR4 substitutes

Post by dynaman » Wed Mar 23, 2005 3:21 pm

I've tried 5U4 and GZ37. Can I safely use 5Y3? Any others? To be used in JTM45.
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Flames1950
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Post by Flames1950 » Wed Mar 23, 2005 7:11 pm

IIRC the 5Y3 can't put out the current that circuits specifying the GZ34/5AR4 want to see. It has a short-lived existence in those cases.
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