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Just tried 5U4G.....

I replaced the 5Y3GT Tung Sol with another Tung Sol 5U4G (Coke Bottle).

Nothing's blown up yet! :)

I did have to rebias the amp though and set the bias lower from around 0.9 mV to 0.7 mV as per the manufacturer's recommendation.

My 5U4G is a NOS specimen so I'm letting it burn in for about 20 hours before I proceed to carry out a more indepth comparison.


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