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Current Production 5U4s

Current production Chinese and Russian 5U4Gs are GUANO.

The only current production 5U4 that might be acceptable is the Russian 5U4GB, which come on stream a couple of years ago.

The recommendation to buy US made NOS is CORRECT. TungSol, RCA, and GE 5U4GBs are still affordable, good sounding, and long lasting.

Eli D.


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