Tubes Asylum

12BZ7

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I've heard that 12BZ7 can be used as a substitute for 12AX7, has anyone tried this?

Re: 12BZ7 Thermionic 05:58:22 04/02/01 (0)
Yes I have tried it. It is a high mu twin triode similar to the 12AX7. While it can be substituted without rewiring, it has the same pin out (9A), the 12BZ7 draws double the heater current (600ma as compared to 300ma). Be sure that your p/s can handle the increased current draw before using it (especially in applications where you are using multiple tubes).

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