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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube record

12AX7

Manufacturer: Mullard
Brand: Webcor

Pinched Tip

Code On Tube: I61 B0K
Factory Code: B - Mullard, Blackburn, B - Mullard, Blackburn
Getter: O-Getter Halo
Getter Support: One
Glass Color: Clear Glass
Mica: Double
Archive ID: 1p3zg7ia

Pin Color

Silver

Plate Color

Matte Gray

Plate Look

Ribbed / Scale

Plate Size

14mm

Tip Shape

Pinched Tip

Year

1960

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Maker
Mullard
Brand
Sylvania
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Equivalent and related tube numbers

Commonly cross-referenced designations for 12AX7. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.