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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)

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Tube record

12AU7, K66

Brand: Philips

Pinched Tip

Code On Tube: k66 ⊿8C
Country: Holland
Factory Code: ⊿ - Philips, Heerlen, ⊿ - Philips, Heerlen, ⊿ - Philips, Heerlen
Getter: D-Getter
Glass Color: Clear Glass
Mica: Double
Archive ID: 4xly54ik

Pin Color

Silver Pins

Plate Color

Matte Gray

Plate Look

Ribbed / Scale

Plate Size

Tip Shape

Pinched Tip

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6SN7GTA
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Brand
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ECC83, MC1

Maker: Valvo
Brand: Philips, Miniwatt

6SN7GT, R93

Maker: Mazda
Brand: Philips, Miniwatt

Equivalent and related tube numbers

Commonly cross-referenced designations for 12AU7. Compatibility is not guaranteed. Before substituting, verify socket and pinout, heater voltage and current, bias requirements, and maximum ratings against the relevant manufacturers’ datasheets.